Finding the Fourth Proportional to 78.94, 118.32 and 59.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78.94 : 118.32 = 59.68 : x
2. Step 2: Convert to fraction form
   78.94/118.32 = 59.68/x
3. Step 3: Cross multiply
   78.94x = 118.32 × 59.68
4. Step 4: Simplify right side
   78.94x = 7,061.34
5. Step 5: Solve for x
   x = 7,061.34/78.94
6. Step 6: Final answer
   x = 89.45