Finding the Fourth Proportional to 82,815.83, 124,243.55 and 26,661.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,815.83 : 124,243.55 = 26,661.18 : x
2. Step 2: Convert to fraction form
   82,815.83/124,243.55 = 26,661.18/x
3. Step 3: Cross multiply
   82,815.83x = 124,243.55 × 26,661.18
4. Step 4: Simplify right side
   82,815.83x = 3,312,479,650.39
5. Step 5: Solve for x
   x = 3,312,479,650.39/82,815.83
6. Step 6: Final answer
   x = 39,998.15