Finding the Fourth Proportional to 127.79, 175.82 and 124.37

Step by Step Solution

1. Step 1: Write the proportion equation
   127.79 : 175.82 = 124.37 : x
2. Step 2: Convert to fraction form
   127.79/175.82 = 124.37/x
3. Step 3: Cross multiply
   127.79x = 175.82 × 124.37
4. Step 4: Simplify right side
   127.79x = 21,865.89
5. Step 5: Solve for x
   x = 21,865.89/127.79
6. Step 6: Final answer
   x = 171.11