Finding the Fourth Proportional to 331,113.29, 456,881.37 and 195,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   331,113.29 : 456,881.37 = 195,128.78 : x
2. Step 2: Convert to fraction form
   331,113.29/456,881.37 = 195,128.78/x
3. Step 3: Cross multiply
   331,113.29x = 456,881.37 × 195,128.78
4. Step 4: Simplify right side
   331,113.29x = 89,150,704,984.25
5. Step 5: Solve for x
   x = 89,150,704,984.25/331,113.29
6. Step 6: Final answer
   x = 269,245.32