Finding the Fourth Proportional to 127.50, 175.94 and 72.22

Step by Step Solution

1. Step 1: Write the proportion equation
   127.50 : 175.94 = 72.22 : x
2. Step 2: Convert to fraction form
   127.50/175.94 = 72.22/x
3. Step 3: Cross multiply
   127.50x = 175.94 × 72.22
4. Step 4: Simplify right side
   127.50x = 12,706.39
5. Step 5: Solve for x
   x = 12,706.39/127.50
6. Step 6: Final answer
   x = 99.66