Finding the Fourth Proportional to 69.17, 103.50 and 53.82

Step by Step Solution

1. Step 1: Write the proportion equation
   69.17 : 103.50 = 53.82 : x
2. Step 2: Convert to fraction form
   69.17/103.50 = 53.82/x
3. Step 3: Cross multiply
   69.17x = 103.50 × 53.82
4. Step 4: Simplify right side
   69.17x = 5,570.37
5. Step 5: Solve for x
   x = 5,570.37/69.17
6. Step 6: Final answer
   x = 80.54