Finding the Fourth Proportional to 361,953.86, 499,499.34 and 200,819.48

Step by Step Solution

1. Step 1: Write the proportion equation
   361,953.86 : 499,499.34 = 200,819.48 : x
2. Step 2: Convert to fraction form
   361,953.86/499,499.34 = 200,819.48/x
3. Step 3: Cross multiply
   361,953.86x = 499,499.34 × 200,819.48
4. Step 4: Simplify right side
   361,953.86x = 100,309,197,719.14
5. Step 5: Solve for x
   x = 100,309,197,719.14/361,953.86
6. Step 6: Final answer
   x = 277,132.55