Finding the Fourth Proportional to 127.91, 190.78 and 112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   127.91 : 190.78 = 112.52 : x
2. Step 2: Convert to fraction form
   127.91/190.78 = 112.52/x
3. Step 3: Cross multiply
   127.91x = 190.78 × 112.52
4. Step 4: Simplify right side
   127.91x = 21,466.57
5. Step 5: Solve for x
   x = 21,466.57/127.91
6. Step 6: Final answer
   x = 167.83