Finding the Fourth Proportional to 119,361.89, 164,720.59 and 65,647.28

Step by Step Solution

1. Step 1: Write the proportion equation
   119,361.89 : 164,720.59 = 65,647.28 : x
2. Step 2: Convert to fraction form
   119,361.89/164,720.59 = 65,647.28/x
3. Step 3: Cross multiply
   119,361.89x = 164,720.59 × 65,647.28
4. Step 4: Simplify right side
   119,361.89x = 10,813,458,941.18
5. Step 5: Solve for x
   x = 10,813,458,941.18/119,361.89
6. Step 6: Final answer
   x = 90,593.90