Kittinger's jump is still the highest (albeit unofficial) jump attempted - and yes, it was drogue assisted. He was testing the Beaupre Multi stage Opening system as the last part of Project Excelsior.
Some of the above postings are confusing a number of incidents. As part of Project Volga, Yevgenny (Eugene) Andreev jumped from 82 750 ft, setting the current FAI record. This was in 1962, and the death of another Soviet flyer (Dolgov) occurred on the same day - he jumped from 94 000 ft as part of testing of Soviet space capsule ejection systems, and for some reason had a premature opening in the region of 90000ft. He froze to death or ran out of oxygen ( or both). Nick Piantanida was a civilian who wanted to break both records in 1965-66. He did reach 123 000ft in his balloon, but couldn't release his oxygen disconnector prior to the jump, and the balloon gondola returned to Earth by use of its own parachute ( with him still inside). For this reason, Piantanida's flight, the highest ever attained by humans in a balloon, is NOT an FAI ballooning record - this is held by Navy Lts Vic Prather and Malcolm Ross, who reached 113 000ft in a balloon launched from a US Navy ship in 1961. One of them subsequently drowned in recovery ops. Piantanida was killed when he tried to go for the record again in 1966. He suffered explosive decompression at 57 000ft .....his gondola was recovered by parachute automated release, and he was in a coma for three months before he died. This is the most severe case of high-altitude explosive decompression ever documented. A tragic history post-Kittinger...........