Finding the Fourth Proportional to 127.41, 175.83 and 72.16

Step by Step Solution

1. Step 1: Write the proportion equation
   127.41 : 175.83 = 72.16 : x
2. Step 2: Convert to fraction form
   127.41/175.83 = 72.16/x
3. Step 3: Cross multiply
   127.41x = 175.83 × 72.16
4. Step 4: Simplify right side
   127.41x = 12,687.59
5. Step 5: Solve for x
   x = 12,687.59/127.41
6. Step 6: Final answer
   x = 99.58