Finding the Fourth Proportional to 196.82, 271.43 and 131.39

Step by Step Solution

1. Step 1: Write the proportion equation
   196.82 : 271.43 = 131.39 : x
2. Step 2: Convert to fraction form
   196.82/271.43 = 131.39/x
3. Step 3: Cross multiply
   196.82x = 271.43 × 131.39
4. Step 4: Simplify right side
   196.82x = 35,663.42
5. Step 5: Solve for x
   x = 35,663.42/196.82
6. Step 6: Final answer
   x = 181.20