Finding the Fourth Proportional to 82.87, 124.15 and 59.93

Step by Step Solution

1. Step 1: Write the proportion equation
   82.87 : 124.15 = 59.93 : x
2. Step 2: Convert to fraction form
   82.87/124.15 = 59.93/x
3. Step 3: Cross multiply
   82.87x = 124.15 × 59.93
4. Step 4: Simplify right side
   82.87x = 7,440.31
5. Step 5: Solve for x
   x = 7,440.31/82.87
6. Step 6: Final answer
   x = 89.78