Finding the Fourth Proportional to 321,443.21, 443,602.42 and 178,194.71

Step by Step Solution

1. Step 1: Write the proportion equation
   321,443.21 : 443,602.42 = 178,194.71 : x
2. Step 2: Convert to fraction form
   321,443.21/443,602.42 = 178,194.71/x
3. Step 3: Cross multiply
   321,443.21x = 443,602.42 × 178,194.71
4. Step 4: Simplify right side
   321,443.21x = 79,047,605,250.72
5. Step 5: Solve for x
   x = 79,047,605,250.72/321,443.21
6. Step 6: Final answer
   x = 245,914.68