Finding the Fourth Proportional to 269,819.86, 404,659.27 and 80,229.17

Step by Step Solution

1. Step 1: Write the proportion equation
   269,819.86 : 404,659.27 = 80,229.17 : x
2. Step 2: Convert to fraction form
   269,819.86/404,659.27 = 80,229.17/x
3. Step 3: Cross multiply
   269,819.86x = 404,659.27 × 80,229.17
4. Step 4: Simplify right side
   269,819.86x = 32,465,477,364.91
5. Step 5: Solve for x
   x = 32,465,477,364.91/269,819.86
6. Step 6: Final answer
   x = 120,322.79