Finding the Fourth Proportional to 131.31, 196.88 and 97.07

Step by Step Solution

1. Step 1: Write the proportion equation
   131.31 : 196.88 = 97.07 : x
2. Step 2: Convert to fraction form
   131.31/196.88 = 97.07/x
3. Step 3: Cross multiply
   131.31x = 196.88 × 97.07
4. Step 4: Simplify right side
   131.31x = 19,109.67
5. Step 5: Solve for x
   x = 19,109.67/131.31
6. Step 6: Final answer
   x = 145.53