Finding the Fourth Proportional to 71,943.20, 99,282.72 and 40,111.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,943.20 : 99,282.72 = 40,111.04 : x
2. Step 2: Convert to fraction form
   71,943.20/99,282.72 = 40,111.04/x
3. Step 3: Cross multiply
   71,943.20x = 99,282.72 × 40,111.04
4. Step 4: Simplify right side
   71,943.20x = 3,982,333,153.23
5. Step 5: Solve for x
   x = 3,982,333,153.23/71,943.20
6. Step 6: Final answer
   x = 55,353.85