New Delhi: India could leapfrog Mexico and China to emerge as Marriott International's second-largest market globally in the next three to four years, president and CEO Anthony Capuano told ET. The world's largest hotel chain is expanding aggressively beyond India's biggest cities, aiming to nearly double its room inventory by tapping a growing domestic appetite for business and leisure travel.The US is Marriott's largest market currently, followed by China, Mexico, and India. "I would guess that in probably the next three or four years, India will be our second-largest market, and we have no intention of slowing down," said Capuano.ALSO…