I dunno.  It has no special meaning in Islam that I'm aware of, but I'm not any kind of expert in Islam.  And since oil is priced in dollars, I think he used dollars in the original statement.

I've been trying to find out more about when he said this and what the original context was, but it's hard to search for now because the Interwebs are full of people talking about oil actually reaching $144.  But it seems to have come from a 1999 interview with Al Jazeera correspondent Jamal Abdel-Latif Ismail.  This article in a journal published by the US Army ("Military Review") describes the interview and the book that the correspondent wrote later.  The petro-politics matter comes up at the end, on page 6 of the Web version, and the syntax is a little jumbled so it's hard to figure out what he means:

Ismail describes Bin-Laden's belief that America robs Saudi Arabia of its oil wealth. Bin-Laden explains that during the reign of King Faisal, the United States paid only 70 cents per barrel [of oil]. In the 1973 oil crisis, the Muslims asserted their economic power using oil as a weapon, and prices began to rise to $40 per barrel. When the [oil] prices leveled off to $36, the United States pressured Gulf countries to increase their production to lower prices. Bin-Laden labels this "the great swindle." Doing basic math, Bin-Laden explains that from $36 the price was lowered to $9 per barrel, he relates the retail price at $144 per barrel, or a loss of $135. He multiplied $135 by the 30 million barrels produced in the Islamic world daily, totaling a loss of $4.5 billion per day for Muslim nations. He breaks down the loss over 25 years to $30,000 for every Muslim man, woman, and child. Although this is an oversimplification of petroleum production and evolution of agreements between oil companies and oil-producing nations, it is highlighted to demonstrate the skill with which Bin-Laden panders to the disenfranchised, giving them an alternate history.

So it sounds from that like he thinks oil is just intrinsically worth $144 a barrel, but there are obviously some translation problems and it's just paraphrased here.  I'm looking for the original interview in Arabic to see if I can figure it out, but I'm kinda busy today too.