Finding the Fourth Proportional to 404,585.22, 558,320.82 and 223,296.87

Step by Step Solution

1. Step 1: Write the proportion equation
   404,585.22 : 558,320.82 = 223,296.87 : x
2. Step 2: Convert to fraction form
   404,585.22/558,320.82 = 223,296.87/x
3. Step 3: Cross multiply
   404,585.22x = 558,320.82 × 223,296.87
4. Step 4: Simplify right side
   404,585.22x = 124,671,291,561.83
5. Step 5: Solve for x
   x = 124,671,291,561.83/404,585.22
6. Step 6: Final answer
   x = 308,145.94