Finding the Fourth Proportional to 72,680.72, 100,287.15 and 40,414.41

Step by Step Solution

1. Step 1: Write the proportion equation
   72,680.72 : 100,287.15 = 40,414.41 : x
2. Step 2: Convert to fraction form
   72,680.72/100,287.15 = 40,414.41/x
3. Step 3: Cross multiply
   72,680.72x = 100,287.15 × 40,414.41
4. Step 4: Simplify right side
   72,680.72x = 4,053,045,997.83
5. Step 5: Solve for x
   x = 4,053,045,997.83/72,680.72
6. Step 6: Final answer
   x = 55,765.08