Finding the Fourth Proportional to 81,990.82, 123,003.52 and 26,582.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,990.82 : 123,003.52 = 26,582.50 : x
2. Step 2: Convert to fraction form
   81,990.82/123,003.52 = 26,582.50/x
3. Step 3: Cross multiply
   81,990.82x = 123,003.52 × 26,582.50
4. Step 4: Simplify right side
   81,990.82x = 3,269,741,070.40
5. Step 5: Solve for x
   x = 3,269,741,070.40/81,990.82
6. Step 6: Final answer
   x = 39,879.36