Finding the Fourth Proportional to 82,016.87, 122,981.56 and 42,475.91

Step by Step Solution

1. Step 1: Write the proportion equation
   82,016.87 : 122,981.56 = 42,475.91 : x
2. Step 2: Convert to fraction form
   82,016.87/122,981.56 = 42,475.91/x
3. Step 3: Cross multiply
   82,016.87x = 122,981.56 × 42,475.91
4. Step 4: Simplify right side
   82,016.87x = 5,223,752,953.12
5. Step 5: Solve for x
   x = 5,223,752,953.12/82,016.87
6. Step 6: Final answer
   x = 63,691.20