Finding the Fourth Proportional to 404,704.50, 558,492.22 and 225,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,704.50 : 558,492.22 = 225,856.50 : x
2. Step 2: Convert to fraction form
   404,704.50/558,492.22 = 225,856.50/x
3. Step 3: Cross multiply
   404,704.50x = 558,492.22 × 225,856.50
4. Step 4: Simplify right side
   404,704.50x = 126,139,098,086.43
5. Step 5: Solve for x
   x = 126,139,098,086.43/404,704.50
6. Step 6: Final answer
   x = 311,681.98