A 31-year-old Gates became the youngest billionaire in the world in 1987, shortly after Microsoft went public. In 1995, at age 39, he was the richest man in the world with a fortune of $12.9 billion, NPR reports, and held the title on and off for decades. read more
He moves ahead of Bill Gates, who is now number 2. It is the biggest gap between no. 1 and 2 since 2001. Bernard Arnault, with a fortune of $72 billion, reclaims the title of richest European for the first time since 2012. read more
In February 2018, Jeff Bezos was at the top of the world's rich list with the Amazon king worth a whopping £84billion. read more