Finding the Fourth Proportional to 112.22, 168.06 and 102.05

Step by Step Solution

1. Step 1: Write the proportion equation
   112.22 : 168.06 = 102.05 : x
2. Step 2: Convert to fraction form
   112.22/168.06 = 102.05/x
3. Step 3: Cross multiply
   112.22x = 168.06 × 102.05
4. Step 4: Simplify right side
   112.22x = 17,150.52
5. Step 5: Solve for x
   x = 17,150.52/112.22
6. Step 6: Final answer
   x = 152.83