Finding the Fourth Proportional to 61.39, 91.98 and 59.11

Step by Step Solution

1. Step 1: Write the proportion equation
   61.39 : 91.98 = 59.11 : x
2. Step 2: Convert to fraction form
   61.39/91.98 = 59.11/x
3. Step 3: Cross multiply
   61.39x = 91.98 × 59.11
4. Step 4: Simplify right side
   61.39x = 5,436.56
5. Step 5: Solve for x
   x = 5,436.56/61.39
6. Step 6: Final answer
   x = 88.56