Finding the Fourth Proportional to 127.09, 175.38 and 71.83

Step by Step Solution

1. Step 1: Write the proportion equation
   127.09 : 175.38 = 71.83 : x
2. Step 2: Convert to fraction form
   127.09/175.38 = 71.83/x
3. Step 3: Cross multiply
   127.09x = 175.38 × 71.83
4. Step 4: Simplify right side
   127.09x = 12,597.55
5. Step 5: Solve for x
   x = 12,597.55/127.09
6. Step 6: Final answer
   x = 99.12