Finding the Fourth Proportional to 321,185.74, 443,224.57 and 185,225.42

Step by Step Solution

1. Step 1: Write the proportion equation
   321,185.74 : 443,224.57 = 185,225.42 : x
2. Step 2: Convert to fraction form
   321,185.74/443,224.57 = 185,225.42/x
3. Step 3: Cross multiply
   321,185.74x = 443,224.57 × 185,225.42
4. Step 4: Simplify right side
   321,185.74x = 82,096,457,132.57
5. Step 5: Solve for x
   x = 82,096,457,132.57/321,185.74
6. Step 6: Final answer
   x = 255,604.30