Finding the Fourth Proportional to 72.68, 108.86 and 59.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72.68 : 108.86 = 59.69 : x
2. Step 2: Convert to fraction form
   72.68/108.86 = 59.69/x
3. Step 3: Cross multiply
   72.68x = 108.86 × 59.69
4. Step 4: Simplify right side
   72.68x = 6,498.22
5. Step 5: Solve for x
   x = 6,498.22/72.68
6. Step 6: Final answer
   x = 89.41