Finding the Fourth Proportional to 113,251.32, 156,282.89 and 72,966.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,251.32 : 156,282.89 = 72,966.78 : x
2. Step 2: Convert to fraction form
   113,251.32/156,282.89 = 72,966.78/x
3. Step 3: Cross multiply
   113,251.32x = 156,282.89 × 72,966.78
4. Step 4: Simplify right side
   113,251.32x = 11,403,458,887.56
5. Step 5: Solve for x
   x = 11,403,458,887.56/113,251.32
6. Step 6: Final answer
   x = 100,691.62