Amazon Founder Jeff Bezos has become the world's second-richest person with a net worth of $75.6 billion. Bezos added $1.5 billion to his fortune on Wednesday after Amazon's share rose as it confirmed acquisition of Dubai-based online retailer Souq. Bezos has leaped past Zara Founder Amancio Ortega and Berkshire Hathaway's owner Warren Buffett to become the world's second richest.