Finding the Fourth Proportional to 113,451.32, 156,577.50 and 65,072.12

Step by Step Solution

1. Step 1: Write the proportion equation
   113,451.32 : 156,577.50 = 65,072.12 : x
2. Step 2: Convert to fraction form
   113,451.32/156,577.50 = 65,072.12/x
3. Step 3: Cross multiply
   113,451.32x = 156,577.50 × 65,072.12
4. Step 4: Simplify right side
   113,451.32x = 10,188,829,869.30
5. Step 5: Solve for x
   x = 10,188,829,869.30/113,451.32
6. Step 6: Final answer
   x = 89,807.94