Finding the Fourth Proportional to 71,983.59, 99,337.30 and 40,152.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,983.59 : 99,337.30 = 40,152.48 : x
2. Step 2: Convert to fraction form
   71,983.59/99,337.30 = 40,152.48/x
3. Step 3: Cross multiply
   71,983.59x = 99,337.30 × 40,152.48
4. Step 4: Simplify right side
   71,983.59x = 3,988,638,951.50
5. Step 5: Solve for x
   x = 3,988,638,951.50/71,983.59
6. Step 6: Final answer
   x = 55,410.39