Finding the Fourth Proportional to 192.69, 288.56 and 111.29

Step by Step Solution

1. Step 1: Write the proportion equation
   192.69 : 288.56 = 111.29 : x
2. Step 2: Convert to fraction form
   192.69/288.56 = 111.29/x
3. Step 3: Cross multiply
   192.69x = 288.56 × 111.29
4. Step 4: Simplify right side
   192.69x = 32,111.84
5. Step 5: Solve for x
   x = 32,111.84/192.69
6. Step 6: Final answer
   x = 166.65