Finding the Fourth Proportional to 321,640.88, 443,573.96 and 200,793.33

Step by Step Solution

1. Step 1: Write the proportion equation
   321,640.88 : 443,573.96 = 200,793.33 : x
2. Step 2: Convert to fraction form
   321,640.88/443,573.96 = 200,793.33/x
3. Step 3: Cross multiply
   321,640.88x = 443,573.96 × 200,793.33
4. Step 4: Simplify right side
   321,640.88x = 89,066,691,525.72
5. Step 5: Solve for x
   x = 89,066,691,525.72/321,640.88
6. Step 6: Final answer
   x = 276,913.47