Finding the Fourth Proportional to 321,578.83, 443,806.06 and 178,385

Step by Step Solution

1. Step 1: Write the proportion equation
   321,578.83 : 443,806.06 = 178,385 : x
2. Step 2: Convert to fraction form
   321,578.83/443,806.06 = 178,385/x
3. Step 3: Cross multiply
   321,578.83x = 443,806.06 × 178,385
4. Step 4: Simplify right side
   321,578.83x = 79,168,344,013.10
5. Step 5: Solve for x
   x = 79,168,344,013.10/321,578.83
6. Step 6: Final answer
   x = 246,186.43