Finding the Fourth Proportional to 359,434.50, 496,019.61 and 200,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,434.50 : 496,019.61 = 200,458.50 : x
2. Step 2: Convert to fraction form
   359,434.50/496,019.61 = 200,458.50/x
3. Step 3: Cross multiply
   359,434.50x = 496,019.61 × 200,458.50
4. Step 4: Simplify right side
   359,434.50x = 99,431,346,991.19
5. Step 5: Solve for x
   x = 99,431,346,991.19/359,434.50
6. Step 6: Final answer
   x = 276,632.73