Finding the Fourth Proportional to 72,073.88, 99,461.92 and 40,242.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,073.88 : 99,461.92 = 40,242.76 : x
2. Step 2: Convert to fraction form
   72,073.88/99,461.92 = 40,242.76/x
3. Step 3: Cross multiply
   72,073.88x = 99,461.92 × 40,242.76
4. Step 4: Simplify right side
   72,073.88x = 4,002,622,175.70
5. Step 5: Solve for x
   x = 4,002,622,175.70/72,073.88
6. Step 6: Final answer
   x = 55,534.99