Finding the Fourth Proportional to 321,100.88, 443,122.76 and 177,863.12

Step by Step Solution

1. Step 1: Write the proportion equation
   321,100.88 : 443,122.76 = 177,863.12 : x
2. Step 2: Convert to fraction form
   321,100.88/443,122.76 = 177,863.12/x
3. Step 3: Cross multiply
   321,100.88x = 443,122.76 × 177,863.12
4. Step 4: Simplify right side
   321,100.88x = 78,815,196,636.61
5. Step 5: Solve for x
   x = 78,815,196,636.61/321,100.88
6. Step 6: Final answer
   x = 245,453.07