Finding the Fourth Proportional to 72.36, 108.72 and 59.00

Step by Step Solution

1. Step 1: Write the proportion equation
   72.36 : 108.72 = 59.00 : x
2. Step 2: Convert to fraction form
   72.36/108.72 = 59.00/x
3. Step 3: Cross multiply
   72.36x = 108.72 × 59.00
4. Step 4: Simplify right side
   72.36x = 6,413.94
5. Step 5: Solve for x
   x = 6,413.94/72.36
6. Step 6: Final answer
   x = 88.64