Finding the Fourth Proportional to 269,636.43, 404,535.45 and 80,103.12

Step by Step Solution

1. Step 1: Write the proportion equation
   269,636.43 : 404,535.45 = 80,103.12 : x
2. Step 2: Convert to fraction form
   269,636.43/404,535.45 = 80,103.12/x
3. Step 3: Cross multiply
   269,636.43x = 404,535.45 × 80,103.12
4. Step 4: Simplify right side
   269,636.43x = 32,404,551,695.60
5. Step 5: Solve for x
   x = 32,404,551,695.60/269,636.43
6. Step 6: Final answer
   x = 120,178.69