How do you get on the 4th floor on banjo tooie?

To reach the 4th floor in Banjo-Tooie, you need to first obtain the "Conga's Jungle" and "Mumbo's Mountain" abilities. Then, use the "Claw Clamber Boots" to climb up the walls in the "Grunty Industries" area. Once you reach the appropriate height, use your jumping and climbing skills to access the 4th floor. Be sure to explore thoroughly to find any necessary items and abilities along the way!