Finding the Fourth Proportional to 127.72, 191.94 and 124.48

Step by Step Solution

1. Step 1: Write the proportion equation
   127.72 : 191.94 = 124.48 : x
2. Step 2: Convert to fraction form
   127.72/191.94 = 124.48/x
3. Step 3: Cross multiply
   127.72x = 191.94 × 124.48
4. Step 4: Simplify right side
   127.72x = 23,892.69
5. Step 5: Solve for x
   x = 23,892.69/127.72
6. Step 6: Final answer
   x = 187.07