Finding the Fourth Proportional to 359,516.50, 496,132.77 and 200,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,516.50 : 496,132.77 = 200,540.50 : x
2. Step 2: Convert to fraction form
   359,516.50/496,132.77 = 200,540.50/x
3. Step 3: Cross multiply
   359,516.50x = 496,132.77 × 200,540.50
4. Step 4: Simplify right side
   359,516.50x = 99,494,713,762.19
5. Step 5: Solve for x
   x = 99,494,713,762.19/359,516.50
6. Step 6: Final answer
   x = 276,745.89