Finding the Fourth Proportional to 404,424.28, 558,096.24 and 223,153.30

Step by Step Solution

1. Step 1: Write the proportion equation
   404,424.28 : 558,096.24 = 223,153.30 : x
2. Step 2: Convert to fraction form
   404,424.28/558,096.24 = 223,153.30/x
3. Step 3: Cross multiply
   404,424.28x = 558,096.24 × 223,153.30
4. Step 4: Simplify right side
   404,424.28x = 124,541,017,673.59
5. Step 5: Solve for x
   x = 124,541,017,673.59/404,424.28
6. Step 6: Final answer
   x = 307,946.44