Finding the Fourth Proportional to 127.72, 191.36 and 62.72

Step by Step Solution

1. Step 1: Write the proportion equation
   127.72 : 191.36 = 62.72 : x
2. Step 2: Convert to fraction form
   127.72/191.36 = 62.72/x
3. Step 3: Cross multiply
   127.72x = 191.36 × 62.72
4. Step 4: Simplify right side
   127.72x = 12,002.10
5. Step 5: Solve for x
   x = 12,002.10/127.72
6. Step 6: Final answer
   x = 93.97