Finding the Fourth Proportional to 404,913.43, 558,784.71 and 223,629.88

Step by Step Solution

1. Step 1: Write the proportion equation
   404,913.43 : 558,784.71 = 223,629.88 : x
2. Step 2: Convert to fraction form
   404,913.43/558,784.71 = 223,629.88/x
3. Step 3: Cross multiply
   404,913.43x = 558,784.71 × 223,629.88
4. Step 4: Simplify right side
   404,913.43x = 124,960,957,643.14
5. Step 5: Solve for x
   x = 124,960,957,643.14/404,913.43
6. Step 6: Final answer
   x = 308,611.54