Finding the Fourth Proportional to 256,503.57, 353,974.17 and 143,326.41

Step by Step Solution

1. Step 1: Write the proportion equation
   256,503.57 : 353,974.17 = 143,326.41 : x
2. Step 2: Convert to fraction form
   256,503.57/353,974.17 = 143,326.41/x
3. Step 3: Cross multiply
   256,503.57x = 353,974.17 × 143,326.41
4. Step 4: Simplify right side
   256,503.57x = 50,733,847,018.83
5. Step 5: Solve for x
   x = 50,733,847,018.83/256,503.57
6. Step 6: Final answer
   x = 197,790.02