Finding the Fourth Proportional to 86.26, 118.89 and 59.98

Step by Step Solution

1. Step 1: Write the proportion equation
   86.26 : 118.89 = 59.98 : x
2. Step 2: Convert to fraction form
   86.26/118.89 = 59.98/x
3. Step 3: Cross multiply
   86.26x = 118.89 × 59.98
4. Step 4: Simplify right side
   86.26x = 7,131.02
5. Step 5: Solve for x
   x = 7,131.02/86.26
6. Step 6: Final answer
   x = 82.67