Finding the Fourth Proportional to 131.31, 196.61 and 96.93

Step by Step Solution

1. Step 1: Write the proportion equation
   131.31 : 196.61 = 96.93 : x
2. Step 2: Convert to fraction form
   131.31/196.61 = 96.93/x
3. Step 3: Cross multiply
   131.31x = 196.61 × 96.93
4. Step 4: Simplify right side
   131.31x = 19,056.92
5. Step 5: Solve for x
   x = 19,056.92/131.31
6. Step 6: Final answer
   x = 145.13