Finding the Fourth Proportional to 321,318.06, 443,317.61 and 185,333.78

Step by Step Solution

1. Step 1: Write the proportion equation
   321,318.06 : 443,317.61 = 185,333.78 : x
2. Step 2: Convert to fraction form
   321,318.06/443,317.61 = 185,333.78/x
3. Step 3: Cross multiply
   321,318.06x = 443,317.61 × 185,333.78
4. Step 4: Simplify right side
   321,318.06x = 82,161,725,258.61
5. Step 5: Solve for x
   x = 82,161,725,258.61/321,318.06
6. Step 6: Final answer
   x = 255,702.17