Finding the Fourth Proportional to 196.89, 271.58 and 131.51

Step by Step Solution

1. Step 1: Write the proportion equation
   196.89 : 271.58 = 131.51 : x
2. Step 2: Convert to fraction form
   196.89/271.58 = 131.51/x
3. Step 3: Cross multiply
   196.89x = 271.58 × 131.51
4. Step 4: Simplify right side
   196.89x = 35,713.47
5. Step 5: Solve for x
   x = 35,713.47/196.89
6. Step 6: Final answer
   x = 181.39