Finding the Fourth Proportional to 114.57, 171.69 and 53.69

Step by Step Solution

1. Step 1: Write the proportion equation
   114.57 : 171.69 = 53.69 : x
2. Step 2: Convert to fraction form
   114.57/171.69 = 53.69/x
3. Step 3: Cross multiply
   114.57x = 171.69 × 53.69
4. Step 4: Simplify right side
   114.57x = 9,216.98
5. Step 5: Solve for x
   x = 9,216.98/114.57
6. Step 6: Final answer
   x = 80.45