Finding the Fourth Proportional to 113,465.61, 156,558.83 and 65,716.11

Step by Step Solution

1. Step 1: Write the proportion equation
   113,465.61 : 156,558.83 = 65,716.11 : x
2. Step 2: Convert to fraction form
   113,465.61/156,558.83 = 65,716.11/x
3. Step 3: Cross multiply
   113,465.61x = 156,558.83 × 65,716.11
4. Step 4: Simplify right side
   113,465.61x = 10,288,436,965.17
5. Step 5: Solve for x
   x = 10,288,436,965.17/113,465.61
6. Step 6: Final answer
   x = 90,674.50