Finding the Fourth Proportional to 45,665.24, 62,986.92 and 39,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   45,665.24 : 62,986.92 = 39,686.72 : x
2. Step 2: Convert to fraction form
   45,665.24/62,986.92 = 39,686.72/x
3. Step 3: Cross multiply
   45,665.24x = 62,986.92 × 39,686.72
4. Step 4: Simplify right side
   45,665.24x = 2,499,744,257.70
5. Step 5: Solve for x
   x = 2,499,744,257.70/45,665.24
6. Step 6: Final answer
   x = 54,740.64