Gautam Adani's fortunes have suffered a severe setback on concerns over corporate governance and accounting fraud, leading to Reliance Industries' Mukesh Ambani replacing the Ahmedabad-based industrialist as the richest Indian. Adani lost Rs 3,000 crore of wealth every week over the last year and his overall networth is down 60 per cent from its peak, as per the M3M Hurun Global Rich List, which pegged Adani's overall fortune at $53 billion as of mid-March.