New York, NY -- Steven Spielberg is now as rich as Donald Trump. They're on the annual Forbes list of billionaires. Each is worth $3.2 billion. That's nearly a billion more than Oprah Winfrey, who's worth $2.3 billion. Spielberg's buddy George Lucas is listed as having $3.9 billion, while media mogul David Geffen has $6 billion. They're all considered poor compared to the number-one billionaire on the list. Mexican tycoon Carlos Slim is worth $73 billion. He's the world's richest man for the fourth straight year.