Finding the Fourth Proportional to 127.49, 190.82 and 108.05

Step by Step Solution

1. Step 1: Write the proportion equation
   127.49 : 190.82 = 108.05 : x
2. Step 2: Convert to fraction form
   127.49/190.82 = 108.05/x
3. Step 3: Cross multiply
   127.49x = 190.82 × 108.05
4. Step 4: Simplify right side
   127.49x = 20,617.42
5. Step 5: Solve for x
   x = 20,617.42/127.49
6. Step 6: Final answer
   x = 161.72