Finding the Fourth Proportional to 82.42, 113.73 and 51.35

Step by Step Solution

1. Step 1: Write the proportion equation
   82.42 : 113.73 = 51.35 : x
2. Step 2: Convert to fraction form
   82.42/113.73 = 51.35/x
3. Step 3: Cross multiply
   82.42x = 113.73 × 51.35
4. Step 4: Simplify right side
   82.42x = 5,840.04
5. Step 5: Solve for x
   x = 5,840.04/82.42
6. Step 6: Final answer
   x = 70.86