Finding the Fourth Proportional to 315,949.55, 436,238.69 and 195,256.31

Step by Step Solution

1. Step 1: Write the proportion equation
   315,949.55 : 436,238.69 = 195,256.31 : x
2. Step 2: Convert to fraction form
   315,949.55/436,238.69 = 195,256.31/x
3. Step 3: Cross multiply
   315,949.55x = 436,238.69 × 195,256.31
4. Step 4: Simplify right side
   315,949.55x = 85,178,353,731.16
5. Step 5: Solve for x
   x = 85,178,353,731.16/315,949.55
6. Step 6: Final answer
   x = 269,594.80