Finding the Fourth Proportional to 321,401.43, 443,530.49 and 185,433.75

Step by Step Solution

1. Step 1: Write the proportion equation
   321,401.43 : 443,530.49 = 185,433.75 : x
2. Step 2: Convert to fraction form
   321,401.43/443,530.49 = 185,433.75/x
3. Step 3: Cross multiply
   321,401.43x = 443,530.49 × 185,433.75
4. Step 4: Simplify right side
   321,401.43x = 82,245,521,072.87
5. Step 5: Solve for x
   x = 82,245,521,072.87/321,401.43
6. Step 6: Final answer
   x = 255,896.56