Finding the Fourth Proportional to 94.47, 140.83 and 89.34

Step by Step Solution

1. Step 1: Write the proportion equation
   94.47 : 140.83 = 89.34 : x
2. Step 2: Convert to fraction form
   94.47/140.83 = 89.34/x
3. Step 3: Cross multiply
   94.47x = 140.83 × 89.34
4. Step 4: Simplify right side
   94.47x = 12,581.59
5. Step 5: Solve for x
   x = 12,581.59/94.47
6. Step 6: Final answer
   x = 133.18