Finding the Fourth Proportional to 321,380.34, 443,526.21 and 178,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   321,380.34 : 443,526.21 = 178,146.42 : x
2. Step 2: Convert to fraction form
   321,380.34/443,526.21 = 178,146.42/x
3. Step 3: Cross multiply
   321,380.34x = 443,526.21 × 178,146.42
4. Step 4: Simplify right side
   321,380.34x = 79,012,606,487.67
5. Step 5: Solve for x
   x = 79,012,606,487.67/321,380.34
6. Step 6: Final answer
   x = 245,853.89