Finding the Fourth Proportional to 127.22, 175.37 and 99.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127.22 : 175.37 = 99.50 : x
2. Step 2: Convert to fraction form
   127.22/175.37 = 99.50/x
3. Step 3: Cross multiply
   127.22x = 175.37 × 99.50
4. Step 4: Simplify right side
   127.22x = 17,447.94
5. Step 5: Solve for x
   x = 17,447.94/127.22
6. Step 6: Final answer
   x = 137.15