Finding the Fourth Proportional to 127.72, 176.06 and 100.00

Step by Step Solution

1. Step 1: Write the proportion equation
   127.72 : 176.06 = 100.00 : x
2. Step 2: Convert to fraction form
   127.72/176.06 = 100.00/x
3. Step 3: Cross multiply
   127.72x = 176.06 × 100.00
4. Step 4: Simplify right side
   127.72x = 17,604.62
5. Step 5: Solve for x
   x = 17,604.62/127.72
6. Step 6: Final answer
   x = 137.84