Finding the Fourth Proportional to 72,437.72, 99,962.16 and 40,608.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,437.72 : 99,962.16 = 40,608.68 : x
2. Step 2: Convert to fraction form
   72,437.72/99,962.16 = 40,608.68/x
3. Step 3: Cross multiply
   72,437.72x = 99,962.16 × 40,608.68
4. Step 4: Simplify right side
   72,437.72x = 4,059,331,367.55
5. Step 5: Solve for x
   x = 4,059,331,367.55/72,437.72
6. Step 6: Final answer
   x = 56,038.92