Finding the Fourth Proportional to 269,870.10, 404,805.15 and 82,881.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,870.10 : 404,805.15 = 82,881.30 : x
2. Step 2: Convert to fraction form
   269,870.10/404,805.15 = 82,881.30/x
3. Step 3: Cross multiply
   269,870.10x = 404,805.15 × 82,881.30
4. Step 4: Simplify right side
   269,870.10x = 33,550,777,078.70
5. Step 5: Solve for x
   x = 33,550,777,078.70/269,870.10
6. Step 6: Final answer
   x = 124,321.95