George Francis Kidson was discovered by police on 5 November in The Flatts, Sowerby, Thirsk.
He was taken to James Cook University Hospital in Middlesbrough, where he died on Monday.
Ryan Brady Campbell, 29, from Thirsk, was remanded by Northallerton magistrates charged with attempted murder and theft. He is due to appear at Teesside Crown Court on 23 November.
An 85-year-old man who was found with serious injuries at his home has died.