Finding the Fourth Proportional to 112.55, 168.78 and 35.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112.55 : 168.78 = 35.50 : x
2. Step 2: Convert to fraction form
   112.55/168.78 = 35.50/x
3. Step 3: Cross multiply
   112.55x = 168.78 × 35.50
4. Step 4: Simplify right side
   112.55x = 5,991.69
5. Step 5: Solve for x
   x = 5,991.69/112.55
6. Step 6: Final answer
   x = 53.24