Finding the Fourth Proportional to 82,653.90, 123,920.10 and 26,461.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,653.90 : 123,920.10 = 26,461.50 : x
2. Step 2: Convert to fraction form
   82,653.90/123,920.10 = 26,461.50/x
3. Step 3: Cross multiply
   82,653.90x = 123,920.10 × 26,461.50
4. Step 4: Simplify right side
   82,653.90x = 3,279,111,726.15
5. Step 5: Solve for x
   x = 3,279,111,726.15/82,653.90
6. Step 6: Final answer
   x = 39,672.80