CREATE TABLE table_23465864_4 (sat_29_aug VARCHAR(255), tues_25_aug VARCHAR(255))
What time was achieved on Saturday 29th August by the rider who recorded 22' 54.20 98.842mph on Tuesday 25th August?
    
SQL: SELECT sat_29_aug FROM table_23465864_4 WHERE tues_25_aug = "22' 54.20 98.842mph"