Finding the Fourth Proportional to 113,436.58, 156,551.52 and 65,690.77

Step by Step Solution

1. Step 1: Write the proportion equation
   113,436.58 : 156,551.52 = 65,690.77 : x
2. Step 2: Convert to fraction form
   113,436.58/156,551.52 = 65,690.77/x
3. Step 3: Cross multiply
   113,436.58x = 156,551.52 × 65,690.77
4. Step 4: Simplify right side
   113,436.58x = 10,283,989,893.47
5. Step 5: Solve for x
   x = 10,283,989,893.47/113,436.58
6. Step 6: Final answer
   x = 90,658.50