Finding the Fourth Proportional to 82.86, 114.31 and 51.35

Step by Step Solution

1. Step 1: Write the proportion equation
   82.86 : 114.31 = 51.35 : x
2. Step 2: Convert to fraction form
   82.86/114.31 = 51.35/x
3. Step 3: Cross multiply
   82.86x = 114.31 × 51.35
4. Step 4: Simplify right side
   82.86x = 5,869.31
5. Step 5: Solve for x
   x = 5,869.31/82.86
6. Step 6: Final answer
   x = 70.84