Finding the Fourth Proportional to 404,662.17, 558,464.72 and 223,409.01

Step by Step Solution

1. Step 1: Write the proportion equation
   404,662.17 : 558,464.72 = 223,409.01 : x
2. Step 2: Convert to fraction form
   404,662.17/558,464.72 = 223,409.01/x
3. Step 3: Cross multiply
   404,662.17x = 558,464.72 × 223,409.01
4. Step 4: Simplify right side
   404,662.17x = 124,766,049,098.08
5. Step 5: Solve for x
   x = 124,766,049,098.08/404,662.17
6. Step 6: Final answer
   x = 308,321.50