Finding the Fourth Proportional to 82,131.81, 123,209.85 and 25,959.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,131.81 : 123,209.85 = 25,959.18 : x
2. Step 2: Convert to fraction form
   82,131.81/123,209.85 = 25,959.18/x
3. Step 3: Cross multiply
   82,131.81x = 123,209.85 × 25,959.18
4. Step 4: Simplify right side
   82,131.81x = 3,198,426,673.92
5. Step 5: Solve for x
   x = 3,198,426,673.92/82,131.81
6. Step 6: Final answer
   x = 38,942.61