Finding the Fourth Proportional to 196.89, 271.68 and 131.37

Step by Step Solution

1. Step 1: Write the proportion equation
   196.89 : 271.68 = 131.37 : x
2. Step 2: Convert to fraction form
   196.89/271.68 = 131.37/x
3. Step 3: Cross multiply
   196.89x = 271.68 × 131.37
4. Step 4: Simplify right side
   196.89x = 35,690.60
5. Step 5: Solve for x
   x = 35,690.60/196.89
6. Step 6: Final answer
   x = 181.27