Updated Jan 13, 2021 | 16:02 IST Since 2017, Jeff Bezos - thanks to his Amazon venture - was the world's richest person. What bumped Tesla's Elon Musk up to the number one spot as the wealthiest person on Earth this week? Read on to discover. Net Value Calculator | Photo Credit: iStock Images Key Highlights Most people are intrigued by the mechanism that decides the list of the world's wealthiest people. Tesla’s stock rose by 4.7% on Tuesday, pushing Elon Musk’s net worth up by $7.8 billion, to $183.8 billion, making him the wealthiest man this week. Amazon-founder Jeff Bezos is at number 2 with $1.4 billion as his net worth.