Finding the Fourth Proportional to 196.81, 271.69 and 131.36

Step by Step Solution

1. Step 1: Write the proportion equation
   196.81 : 271.69 = 131.36 : x
2. Step 2: Convert to fraction form
   196.81/271.69 = 131.36/x
3. Step 3: Cross multiply
   196.81x = 271.69 × 131.36
4. Step 4: Simplify right side
   196.81x = 35,687.51
5. Step 5: Solve for x
   x = 35,687.51/196.81
6. Step 6: Final answer
   x = 181.33