Finding the Fourth Proportional to 100.94, 139.33 and 68.18

Step by Step Solution

1. Step 1: Write the proportion equation
   100.94 : 139.33 = 68.18 : x
2. Step 2: Convert to fraction form
   100.94/139.33 = 68.18/x
3. Step 3: Cross multiply
   100.94x = 139.33 × 68.18
4. Step 4: Simplify right side
   100.94x = 9,499.52
5. Step 5: Solve for x
   x = 9,499.52/100.94
6. Step 6: Final answer
   x = 94.11