Finding the Fourth Proportional to 82.59, 113.98 and 51.51

Step by Step Solution

1. Step 1: Write the proportion equation
   82.59 : 113.98 = 51.51 : x
2. Step 2: Convert to fraction form
   82.59/113.98 = 51.51/x
3. Step 3: Cross multiply
   82.59x = 113.98 × 51.51
4. Step 4: Simplify right side
   82.59x = 5,871.81
5. Step 5: Solve for x
   x = 5,871.81/82.59
6. Step 6: Final answer
   x = 71.10