Finding the Fourth Proportional to 72,061.18, 99,440.28 and 40,232.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,061.18 : 99,440.28 = 40,232.10 : x
2. Step 2: Convert to fraction form
   72,061.18/99,440.28 = 40,232.10/x
3. Step 3: Cross multiply
   72,061.18x = 99,440.28 × 40,232.10
4. Step 4: Simplify right side
   72,061.18x = 4,000,691,288.99
5. Step 5: Solve for x
   x = 4,000,691,288.99/72,061.18
6. Step 6: Final answer
   x = 55,517.98