Finding the Fourth Proportional to 404,458.50, 558,152.73 and 225,610.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,458.50 : 558,152.73 = 225,610.50 : x
2. Step 2: Convert to fraction form
   404,458.50/558,152.73 = 225,610.50/x
3. Step 3: Cross multiply
   404,458.50x = 558,152.73 × 225,610.50
4. Step 4: Simplify right side
   404,458.50x = 125,925,116,491.67
5. Step 5: Solve for x
   x = 125,925,116,491.67/404,458.50
6. Step 6: Final answer
   x = 311,342.49