Finding the Fourth Proportional to 269,781.17, 404,671.59 and 80,240.76

Step by Step Solution

1. Step 1: Write the proportion equation
   269,781.17 : 404,671.59 = 80,240.76 : x
2. Step 2: Convert to fraction form
   269,781.17/404,671.59 = 80,240.76/x
3. Step 3: Cross multiply
   269,781.17x = 404,671.59 × 80,240.76
4. Step 4: Simplify right side
   269,781.17x = 32,471,155,932.01
5. Step 5: Solve for x
   x = 32,471,155,932.01/269,781.17
6. Step 6: Final answer
   x = 120,361.09