Finding the Fourth Proportional to 127.26, 175.61 and 72.00

Step by Step Solution

1. Step 1: Write the proportion equation
   127.26 : 175.61 = 72.00 : x
2. Step 2: Convert to fraction form
   127.26/175.61 = 72.00/x
3. Step 3: Cross multiply
   127.26x = 175.61 × 72.00
4. Step 4: Simplify right side
   127.26x = 12,643.04
5. Step 5: Solve for x
   x = 12,643.04/127.26
6. Step 6: Final answer
   x = 99.35