Finding the Fourth Proportional to 93.29, 139.25 and 89.10

Step by Step Solution

1. Step 1: Write the proportion equation
   93.29 : 139.25 = 89.10 : x
2. Step 2: Convert to fraction form
   93.29/139.25 = 89.10/x
3. Step 3: Cross multiply
   93.29x = 139.25 × 89.10
4. Step 4: Simplify right side
   93.29x = 12,407.40
5. Step 5: Solve for x
   x = 12,407.40/93.29
6. Step 6: Final answer
   x = 133.01