Finding the Fourth Proportional to 126.58, 174.72 and 89.83

Step by Step Solution

1. Step 1: Write the proportion equation
   126.58 : 174.72 = 89.83 : x
2. Step 2: Convert to fraction form
   126.58/174.72 = 89.83/x
3. Step 3: Cross multiply
   126.58x = 174.72 × 89.83
4. Step 4: Simplify right side
   126.58x = 15,695.10
5. Step 5: Solve for x
   x = 15,695.10/126.58
6. Step 6: Final answer
   x = 123.99