Finding the Fourth Proportional to 404,927.91, 558,804.78 and 223,644.42

Step by Step Solution

1. Step 1: Write the proportion equation
   404,927.91 : 558,804.78 = 223,644.42 : x
2. Step 2: Convert to fraction form
   404,927.91/558,804.78 = 223,644.42/x
3. Step 3: Cross multiply
   404,927.91x = 558,804.78 × 223,644.42
4. Step 4: Simplify right side
   404,927.91x = 124,973,570,916.33
5. Step 5: Solve for x
   x = 124,973,570,916.33/404,927.91
6. Step 6: Final answer
   x = 308,631.65