Finding the Fourth Proportional to 83.82, 115.59 and 62.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83.82 : 115.59 = 62.94 : x
2. Step 2: Convert to fraction form
   83.82/115.59 = 62.94/x
3. Step 3: Cross multiply
   83.82x = 115.59 × 62.94
4. Step 4: Simplify right side
   83.82x = 7,275.23
5. Step 5: Solve for x
   x = 7,275.23/83.82
6. Step 6: Final answer
   x = 86.80