Finding the Fourth Proportional to 361,705.60, 499,152.86 and 200,556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,705.60 : 499,152.86 = 200,556.50 : x
2. Step 2: Convert to fraction form
   361,705.60/499,152.86 = 200,556.50/x
3. Step 3: Cross multiply
   361,705.60x = 499,152.86 × 200,556.50
4. Step 4: Simplify right side
   361,705.60x = 100,108,350,566.59
5. Step 5: Solve for x
   x = 100,108,350,566.59/361,705.60
6. Step 6: Final answer
   x = 276,767.49