Finding the Fourth Proportional to 99,288.24, 137,005.56 and 59,002.80

Step by Step Solution

1. Step 1: Write the proportion equation
   99,288.24 : 137,005.56 = 59,002.80 : x
2. Step 2: Convert to fraction form
   99,288.24/137,005.56 = 59,002.80/x
3. Step 3: Cross multiply
   99,288.24x = 137,005.56 × 59,002.80
4. Step 4: Simplify right side
   99,288.24x = 8,083,711,655.57
5. Step 5: Solve for x
   x = 8,083,711,655.57/99,288.24
6. Step 6: Final answer
   x = 81,416.61