Finding the Fourth Proportional to 72,149.33, 99,566.33 and 40,318.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,149.33 : 99,566.33 = 40,318.76 : x
2. Step 2: Convert to fraction form
   72,149.33/99,566.33 = 40,318.76/x
3. Step 3: Cross multiply
   72,149.33x = 99,566.33 × 40,318.76
4. Step 4: Simplify right side
   72,149.33x = 4,014,391,010.67
5. Step 5: Solve for x
   x = 4,014,391,010.67/72,149.33
6. Step 6: Final answer
   x = 55,640.03