Finding the Fourth Proportional to 131.16, 196.56 and 73.32

Step by Step Solution

1. Step 1: Write the proportion equation
   131.16 : 196.56 = 73.32 : x
2. Step 2: Convert to fraction form
   131.16/196.56 = 73.32/x
3. Step 3: Cross multiply
   131.16x = 196.56 × 73.32
4. Step 4: Simplify right side
   131.16x = 14,411.78
5. Step 5: Solve for x
   x = 14,411.78/131.16
6. Step 6: Final answer
   x = 109.88