Finding the Fourth Proportional to 104.07, 155.88 and 67.89

Step by Step Solution

1. Step 1: Write the proportion equation
   104.07 : 155.88 = 67.89 : x
2. Step 2: Convert to fraction form
   104.07/155.88 = 67.89/x
3. Step 3: Cross multiply
   104.07x = 155.88 × 67.89
4. Step 4: Simplify right side
   104.07x = 10,582.69
5. Step 5: Solve for x
   x = 10,582.69/104.07
6. Step 6: Final answer
   x = 101.69