Finding the Fourth Proportional to 321,321.83, 443,424.15 and 178,091.10

Step by Step Solution

1. Step 1: Write the proportion equation
   321,321.83 : 443,424.15 = 178,091.10 : x
2. Step 2: Convert to fraction form
   321,321.83/443,424.15 = 178,091.10/x
3. Step 3: Cross multiply
   321,321.83x = 443,424.15 × 178,091.10
4. Step 4: Simplify right side
   321,321.83x = 78,969,894,640.07
5. Step 5: Solve for x
   x = 78,969,894,640.07/321,321.83
6. Step 6: Final answer
   x = 245,765.73