Finding the Fourth Proportional to 127.69, 176.24 and 72.46

Step by Step Solution

1. Step 1: Write the proportion equation
   127.69 : 176.24 = 72.46 : x
2. Step 2: Convert to fraction form
   127.69/176.24 = 72.46/x
3. Step 3: Cross multiply
   127.69x = 176.24 × 72.46
4. Step 4: Simplify right side
   127.69x = 12,770.88
5. Step 5: Solve for x
   x = 12,770.88/127.69
6. Step 6: Final answer
   x = 100.01