Finding the Fourth Proportional to 127.59, 176.06 and 72.32

Step by Step Solution

1. Step 1: Write the proportion equation
   127.59 : 176.06 = 72.32 : x
2. Step 2: Convert to fraction form
   127.59/176.06 = 72.32/x
3. Step 3: Cross multiply
   127.59x = 176.06 × 72.32
4. Step 4: Simplify right side
   127.59x = 12,731.42
5. Step 5: Solve for x
   x = 12,731.42/127.59
6. Step 6: Final answer
   x = 99.78