Finding the Fourth Proportional to 113,732.12, 157,014.50 and 78,869.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,732.12 : 157,014.50 = 78,869.72 : x
2. Step 2: Convert to fraction form
   113,732.12/157,014.50 = 78,869.72/x
3. Step 3: Cross multiply
   113,732.12x = 157,014.50 × 78,869.72
4. Step 4: Simplify right side
   113,732.12x = 12,383,689,650.94
5. Step 5: Solve for x
   x = 12,383,689,650.94/113,732.12
6. Step 6: Final answer
   x = 108,884.72