Finding the Fourth Proportional to 82,139.75, 123,221.75 and 25,967.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,139.75 : 123,221.75 = 25,967.10 : x
2. Step 2: Convert to fraction form
   82,139.75/123,221.75 = 25,967.10/x
3. Step 3: Cross multiply
   82,139.75x = 123,221.75 × 25,967.10
4. Step 4: Simplify right side
   82,139.75x = 3,199,711,836.67
5. Step 5: Solve for x
   x = 3,199,711,836.67/82,139.75
6. Step 6: Final answer
   x = 38,954.49