Finding the Fourth Proportional to 112,838.52, 155,711.16 and 65,089.02

Step by Step Solution

1. Step 1: Write the proportion equation
   112,838.52 : 155,711.16 = 65,089.02 : x
2. Step 2: Convert to fraction form
   112,838.52/155,711.16 = 65,089.02/x
3. Step 3: Cross multiply
   112,838.52x = 155,711.16 × 65,089.02
4. Step 4: Simplify right side
   112,838.52x = 10,135,086,807.46
5. Step 5: Solve for x
   x = 10,135,086,807.46/112,838.52
6. Step 6: Final answer
   x = 89,819.39