Finding the Fourth Proportional to 60.84, 91.31 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   60.84 : 91.31 = 42.82 : x
2. Step 2: Convert to fraction form
   60.84/91.31 = 42.82/x
3. Step 3: Cross multiply
   60.84x = 91.31 × 42.82
4. Step 4: Simplify right side
   60.84x = 3,909.89
5. Step 5: Solve for x
   x = 3,909.89/60.84
6. Step 6: Final answer
   x = 64.27