Finding the Fourth Proportional to 111,456.52, 153,810.42 and 63,711.40

Step by Step Solution

1. Step 1: Write the proportion equation
   111,456.52 : 153,810.42 = 63,711.40 : x
2. Step 2: Convert to fraction form
   111,456.52/153,810.42 = 63,711.40/x
3. Step 3: Cross multiply
   111,456.52x = 153,810.42 × 63,711.40
4. Step 4: Simplify right side
   111,456.52x = 9,799,477,192.79
5. Step 5: Solve for x
   x = 9,799,477,192.79/111,456.52
6. Step 6: Final answer
   x = 87,921.97