Finding the Fourth Proportional to 321,610.41, 443,676.83 and 200,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,610.41 : 443,676.83 = 200,781.50 : x
2. Step 2: Convert to fraction form
   321,610.41/443,676.83 = 200,781.50/x
3. Step 3: Cross multiply
   321,610.41x = 443,676.83 × 200,781.50
4. Step 4: Simplify right side
   321,610.41x = 89,082,096,220.35
5. Step 5: Solve for x
   x = 89,082,096,220.35/321,610.41
6. Step 6: Final answer
   x = 276,987.60