Finding the Fourth Proportional to 361,562.82, 498,960.86 and 200,420.61

Step by Step Solution

1. Step 1: Write the proportion equation
   361,562.82 : 498,960.86 = 200,420.61 : x
2. Step 2: Convert to fraction form
   361,562.82/498,960.86 = 200,420.61/x
3. Step 3: Cross multiply
   361,562.82x = 498,960.86 × 200,420.61
4. Step 4: Simplify right side
   361,562.82x = 100,002,038,925.22
5. Step 5: Solve for x
   x = 100,002,038,925.22/361,562.82
6. Step 6: Final answer
   x = 276,582.75