Finding the Fourth Proportional to 69.31, 95.61 and 54.82

Step by Step Solution

1. Step 1: Write the proportion equation
   69.31 : 95.61 = 54.82 : x
2. Step 2: Convert to fraction form
   69.31/95.61 = 54.82/x
3. Step 3: Cross multiply
   69.31x = 95.61 × 54.82
4. Step 4: Simplify right side
   69.31x = 5,241.34
5. Step 5: Solve for x
   x = 5,241.34/69.31
6. Step 6: Final answer
   x = 75.62