Finding the Fourth Proportional to 168.18, 251.82 and 127.32

Step by Step Solution

1. Step 1: Write the proportion equation
   168.18 : 251.82 = 127.32 : x
2. Step 2: Convert to fraction form
   168.18/251.82 = 127.32/x
3. Step 3: Cross multiply
   168.18x = 251.82 × 127.32
4. Step 4: Simplify right side
   168.18x = 32,061.72
5. Step 5: Solve for x
   x = 32,061.72/168.18
6. Step 6: Final answer
   x = 190.64