Finding the Fourth Proportional to 72,499.04, 99,990.96 and 59,901.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,499.04 : 99,990.96 = 59,901.92 : x
2. Step 2: Convert to fraction form
   72,499.04/99,990.96 = 59,901.92/x
3. Step 3: Cross multiply
   72,499.04x = 99,990.96 × 59,901.92
4. Step 4: Simplify right side
   72,499.04x = 5,989,650,486.64
5. Step 5: Solve for x
   x = 5,989,650,486.64/72,499.04
6. Step 6: Final answer
   x = 82,616.96