Finding the Fourth Proportional to 89.94, 124.17 and 60.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89.94 : 124.17 = 60.78 : x
2. Step 2: Convert to fraction form
   89.94/124.17 = 60.78/x
3. Step 3: Cross multiply
   89.94x = 124.17 × 60.78
4. Step 4: Simplify right side
   89.94x = 7,547.05
5. Step 5: Solve for x
   x = 7,547.05/89.94
6. Step 6: Final answer
   x = 83.91