Finding the Fourth Proportional to 82,016.74, 122,981.37 and 42,475.78

Step by Step Solution

1. Step 1: Write the proportion equation
   82,016.74 : 122,981.37 = 42,475.78 : x
2. Step 2: Convert to fraction form
   82,016.74/122,981.37 = 42,475.78/x
3. Step 3: Cross multiply
   82,016.74x = 122,981.37 × 42,475.78
4. Step 4: Simplify right side
   82,016.74x = 5,223,729,616.22
5. Step 5: Solve for x
   x = 5,223,729,616.22/82,016.74
6. Step 6: Final answer
   x = 63,691.02