Finding the Fourth Proportional to 127.94, 192.06 and 89.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127.94 : 192.06 = 89.69 : x
2. Step 2: Convert to fraction form
   127.94/192.06 = 89.69/x
3. Step 3: Cross multiply
   127.94x = 192.06 × 89.69
4. Step 4: Simplify right side
   127.94x = 17,224.90
5. Step 5: Solve for x
   x = 17,224.90/127.94
6. Step 6: Final answer
   x = 134.64