Finding the Fourth Proportional to 127.27, 175.61 and 72.01

Step by Step Solution

1. Step 1: Write the proportion equation
   127.27 : 175.61 = 72.01 : x
2. Step 2: Convert to fraction form
   127.27/175.61 = 72.01/x
3. Step 3: Cross multiply
   127.27x = 175.61 × 72.01
4. Step 4: Simplify right side
   127.27x = 12,645.42
5. Step 5: Solve for x
   x = 12,645.42/127.27
6. Step 6: Final answer
   x = 99.36