Finding the Fourth Proportional to 139.46, 192.56 and 106.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139.46 : 192.56 = 106.33 : x
2. Step 2: Convert to fraction form
   139.46/192.56 = 106.33/x
3. Step 3: Cross multiply
   139.46x = 192.56 × 106.33
4. Step 4: Simplify right side
   139.46x = 20,474.69
5. Step 5: Solve for x
   x = 20,474.69/139.46
6. Step 6: Final answer
   x = 146.81