Finding the Fourth Proportional to 72,397.32, 99,908.16 and 40,566.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,397.32 : 99,908.16 = 40,566.36 : x
2. Step 2: Convert to fraction form
   72,397.32/99,908.16 = 40,566.36/x
3. Step 3: Cross multiply
   72,397.32x = 99,908.16 × 40,566.36
4. Step 4: Simplify right side
   72,397.32x = 4,052,910,385.50
5. Step 5: Solve for x
   x = 4,052,910,385.50/72,397.32
6. Step 6: Final answer
   x = 55,981.50