Finding the Fourth Proportional to 88.41, 121.98 and 59.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88.41 : 121.98 = 59.30 : x
2. Step 2: Convert to fraction form
   88.41/121.98 = 59.30/x
3. Step 3: Cross multiply
   88.41x = 121.98 × 59.30
4. Step 4: Simplify right side
   88.41x = 7,233.32
5. Step 5: Solve for x
   x = 7,233.32/88.41
6. Step 6: Final answer
   x = 81.82