Future Yajirobe is seen in the beginning of the TV special Dragon Ball Z: The History of Trunks, when the Z Fighters are gathered around Goku's house before Future Goku dies. In Future Trunks' flashback in the Dragon Ball Z episode "Ghosts from Tomorrow". He is killed by Future Android 18's High-Pressure Energy Wave. When he is shown to be killed, his sword appears to be broken. The reason for this is unknown, but it has quite a resemblance as when Android 18 broke Future Trunks' sword (Future Android 18 may have done the same to Yajirobe's sword if he had attacked her with it).
Future Yajirobe is shown to be the last Z Fighter to be killed in Age 767 by the androids. He was 32 years old when he died.
In the normal timeline, Yajirobe did not attempt to fight the androids, but only had his hovercar shot down (by Android 19 and Android 20, not by Android 17 and Android 18).