Finding the Fourth Proportional to 112.52, 168.63 and 61.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112.52 : 168.63 = 61.09 : x
2. Step 2: Convert to fraction form
   112.52/168.63 = 61.09/x
3. Step 3: Cross multiply
   112.52x = 168.63 × 61.09
4. Step 4: Simplify right side
   112.52x = 10,301.30
5. Step 5: Solve for x
   x = 10,301.30/112.52
6. Step 6: Final answer
   x = 91.55