Finding the Fourth Proportional to 82,016.12, 122,980.43 and 42,475.16

Step by Step Solution

1. Step 1: Write the proportion equation
   82,016.12 : 122,980.43 = 42,475.16 : x
2. Step 2: Convert to fraction form
   82,016.12/122,980.43 = 42,475.16/x
3. Step 3: Cross multiply
   82,016.12x = 122,980.43 × 42,475.16
4. Step 4: Simplify right side
   82,016.12x = 5,223,612,932.40
5. Step 5: Solve for x
   x = 5,223,612,932.40/82,016.12
6. Step 6: Final answer
   x = 63,690.08