Finding the Fourth Proportional to 100.05, 149.29 and 89.83

Step by Step Solution

1. Step 1: Write the proportion equation
   100.05 : 149.29 = 89.83 : x
2. Step 2: Convert to fraction form
   100.05/149.29 = 89.83/x
3. Step 3: Cross multiply
   100.05x = 149.29 × 89.83
4. Step 4: Simplify right side
   100.05x = 13,410.72
5. Step 5: Solve for x
   x = 13,410.72/100.05
6. Step 6: Final answer
   x = 134.04