Finding the Fourth Proportional to 82,540.72, 123,794.70 and 40,402.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,540.72 : 123,794.70 = 40,402.72 : x
2. Step 2: Convert to fraction form
   82,540.72/123,794.70 = 40,402.72/x
3. Step 3: Cross multiply
   82,540.72x = 123,794.70 × 40,402.72
4. Step 4: Simplify right side
   82,540.72x = 5,001,642,601.58
5. Step 5: Solve for x
   x = 5,001,642,601.58/82,540.72
6. Step 6: Final answer
   x = 60,596.06