Finding the Fourth Proportional to 128.18, 192.32 and 67.37

Step by Step Solution

1. Step 1: Write the proportion equation
   128.18 : 192.32 = 67.37 : x
2. Step 2: Convert to fraction form
   128.18/192.32 = 67.37/x
3. Step 3: Cross multiply
   128.18x = 192.32 × 67.37
4. Step 4: Simplify right side
   128.18x = 12,955.30
5. Step 5: Solve for x
   x = 12,955.30/128.18
6. Step 6: Final answer
   x = 101.08