Finding the Fourth Proportional to 131.40, 196.72 and 101.12

Step by Step Solution

1. Step 1: Write the proportion equation
   131.40 : 196.72 = 101.12 : x
2. Step 2: Convert to fraction form
   131.40/196.72 = 101.12/x
3. Step 3: Cross multiply
   131.40x = 196.72 × 101.12
4. Step 4: Simplify right side
   131.40x = 19,892.33
5. Step 5: Solve for x
   x = 19,892.33/131.40
6. Step 6: Final answer
   x = 151.39