Finding the Fourth Proportional to 82,131.71, 123,212.77 and 25,985.95

Step by Step Solution

1. Step 1: Write the proportion equation
   82,131.71 : 123,212.77 = 25,985.95 : x
2. Step 2: Convert to fraction form
   82,131.71/123,212.77 = 25,985.95/x
3. Step 3: Cross multiply
   82,131.71x = 123,212.77 × 25,985.95
4. Step 4: Simplify right side
   82,131.71x = 3,201,801,100.47
5. Step 5: Solve for x
   x = 3,201,801,100.47/82,131.71
6. Step 6: Final answer
   x = 38,983.74