Finding the Fourth Proportional to 72,071.31, 99,454.23 and 40,242.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,071.31 : 99,454.23 = 40,242.24 : x
2. Step 2: Convert to fraction form
   72,071.31/99,454.23 = 40,242.24/x
3. Step 3: Cross multiply
   72,071.31x = 99,454.23 × 40,242.24
4. Step 4: Simplify right side
   72,071.31x = 4,002,260,992.68
5. Step 5: Solve for x
   x = 4,002,260,992.68/72,071.31
6. Step 6: Final answer
   x = 55,531.96