Finding the Fourth Proportional to 82,139.31, 123,221.07 and 25,966.71

Step by Step Solution

1. Step 1: Write the proportion equation
   82,139.31 : 123,221.07 = 25,966.71 : x
2. Step 2: Convert to fraction form
   82,139.31/123,221.07 = 25,966.71/x
3. Step 3: Cross multiply
   82,139.31x = 123,221.07 × 25,966.71
4. Step 4: Simplify right side
   82,139.31x = 3,199,645,790.58
5. Step 5: Solve for x
   x = 3,199,645,790.58/82,139.31
6. Step 6: Final answer
   x = 38,953.89