Finding the Fourth Proportional to 113,869.92, 157,140.72 and 63,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,869.92 : 157,140.72 = 63,570.72 : x
2. Step 2: Convert to fraction form
   113,869.92/157,140.72 = 63,570.72/x
3. Step 3: Cross multiply
   113,869.92x = 157,140.72 × 63,570.72
4. Step 4: Simplify right side
   113,869.92x = 9,989,548,711.72
5. Step 5: Solve for x
   x = 9,989,548,711.72/113,869.92
6. Step 6: Final answer
   x = 87,727.72