Finding the Fourth Proportional to 82,819.28, 124,178.28 and 40,645.82

Step by Step Solution

1. Step 1: Write the proportion equation
   82,819.28 : 124,178.28 = 40,645.82 : x
2. Step 2: Convert to fraction form
   82,819.28/124,178.28 = 40,645.82/x
3. Step 3: Cross multiply
   82,819.28x = 124,178.28 × 40,645.82
4. Step 4: Simplify right side
   82,819.28x = 5,047,328,016.79
5. Step 5: Solve for x
   x = 5,047,328,016.79/82,819.28
6. Step 6: Final answer
   x = 60,943.88