Apple CEO Steve Jobs is ranked 262nd in the Forbes World's Richest list, with $2.1 billion. Last year he was worth $1.7 billion – yet was ranked number 236.

Bill Gates tops the list with $46.6 billion dollars – up from last year's $40.7 billion.

Saudi Arabia's Prince Alwaleed Bin Talal Alsaud, with whom Jobs met recently, is ranked 4th, with $21 billion.

Michael Dell is 18th in the list with $13 billion. Other notables are Harry Potter creator JK Rowling, who is 552nd with $1 billion.