Finding the Fourth Proportional to 71,992.40, 99,261.25 and 59,200.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,992.40 : 99,261.25 = 59,200.88 : x
2. Step 2: Convert to fraction form
   71,992.40/99,261.25 = 59,200.88/x
3. Step 3: Cross multiply
   71,992.40x = 99,261.25 × 59,200.88
4. Step 4: Simplify right side
   71,992.40x = 5,876,352,705.59
5. Step 5: Solve for x
   x = 5,876,352,705.59/71,992.40
6. Step 6: Final answer
   x = 81,624.63