Finding the Fourth Proportional to 127.02, 190.86 and 72.96

Step by Step Solution

1. Step 1: Write the proportion equation
   127.02 : 190.86 = 72.96 : x
2. Step 2: Convert to fraction form
   127.02/190.86 = 72.96/x
3. Step 3: Cross multiply
   127.02x = 190.86 × 72.96
4. Step 4: Simplify right side
   127.02x = 13,925.15
5. Step 5: Solve for x
   x = 13,925.15/127.02
6. Step 6: Final answer
   x = 109.63