Finding the Fourth Proportional to 111,585.52, 153,943.50 and 71,288.83

Step by Step Solution

1. Step 1: Write the proportion equation
   111,585.52 : 153,943.50 = 71,288.83 : x
2. Step 2: Convert to fraction form
   111,585.52/153,943.50 = 71,288.83/x
3. Step 3: Cross multiply
   111,585.52x = 153,943.50 × 71,288.83
4. Step 4: Simplify right side
   111,585.52x = 10,974,452,001.11
5. Step 5: Solve for x
   x = 10,974,452,001.11/111,585.52
6. Step 6: Final answer
   x = 98,350.14