Finding the Fourth Proportional to 111.84, 168.60 and 104.01

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 168.60 = 104.01 : x
2. Step 2: Convert to fraction form
   111.84/168.60 = 104.01/x
3. Step 3: Cross multiply
   111.84x = 168.60 × 104.01
4. Step 4: Simplify right side
   111.84x = 17,536.09
5. Step 5: Solve for x
   x = 17,536.09/111.84
6. Step 6: Final answer
   x = 156.80