Finding the Fourth Proportional to 67.79, 101.61 and 59.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67.79 : 101.61 = 59.69 : x
2. Step 2: Convert to fraction form
   67.79/101.61 = 59.69/x
3. Step 3: Cross multiply
   67.79x = 101.61 × 59.69
4. Step 4: Simplify right side
   67.79x = 6,064.59
5. Step 5: Solve for x
   x = 6,064.59/67.79
6. Step 6: Final answer
   x = 89.47