Finding the Fourth Proportional to 404,055.30, 557,581.77 and 220,289.94

Step by Step Solution

1. Step 1: Write the proportion equation
   404,055.30 : 557,581.77 = 220,289.94 : x
2. Step 2: Convert to fraction form
   404,055.30/557,581.77 = 220,289.94/x
3. Step 3: Cross multiply
   404,055.30x = 557,581.77 × 220,289.94
4. Step 4: Simplify right side
   404,055.30x = 122,829,654,658.39
5. Step 5: Solve for x
   x = 122,829,654,658.39/404,055.30
6. Step 6: Final answer
   x = 303,992.19