Finding the Fourth Proportional to 127.29, 175.69 and 72.06

Step by Step Solution

1. Step 1: Write the proportion equation
   127.29 : 175.69 = 72.06 : x
2. Step 2: Convert to fraction form
   127.29/175.69 = 72.06/x
3. Step 3: Cross multiply
   127.29x = 175.69 × 72.06
4. Step 4: Simplify right side
   127.29x = 12,660.30
5. Step 5: Solve for x
   x = 12,660.30/127.29
6. Step 6: Final answer
   x = 99.46