Finding the Fourth Proportional to 113,781, 157,012.04 and 63,470.28

Step by Step Solution

1. Step 1: Write the proportion equation
   113,781 : 157,012.04 = 63,470.28 : x
2. Step 2: Convert to fraction form
   113,781/157,012.04 = 63,470.28/x
3. Step 3: Cross multiply
   113,781x = 157,012.04 × 63,470.28
4. Step 4: Simplify right side
   113,781x = 9,965,598,142.17
5. Step 5: Solve for x
   x = 9,965,598,142.17/113,781
6. Step 6: Final answer
   x = 87,585.78