Finding the Fourth Proportional to 404,045, 557,599.38 and 225,197

Step by Step Solution

1. Step 1: Write the proportion equation
   404,045 : 557,599.38 = 225,197 : x
2. Step 2: Convert to fraction form
   404,045/557,599.38 = 225,197/x
3. Step 3: Cross multiply
   404,045x = 557,599.38 × 225,197
4. Step 4: Simplify right side
   404,045x = 125,569,707,577.86
5. Step 5: Solve for x
   x = 125,569,707,577.86/404,045
6. Step 6: Final answer
   x = 310,781.49