Finding the Fourth Proportional to 360,443.05, 497,391.33 and 199,288.42

Step by Step Solution

1. Step 1: Write the proportion equation
   360,443.05 : 497,391.33 = 199,288.42 : x
2. Step 2: Convert to fraction form
   360,443.05/497,391.33 = 199,288.42/x
3. Step 3: Cross multiply
   360,443.05x = 497,391.33 × 199,288.42
4. Step 4: Simplify right side
   360,443.05x = 99,124,331,781.25
5. Step 5: Solve for x
   x = 99,124,331,781.25/360,443.05
6. Step 6: Final answer
   x = 275,006.92