Finding the Fourth Proportional to 120,081.54, 165,626.73 and 91,738.02

Step by Step Solution

1. Step 1: Write the proportion equation
   120,081.54 : 165,626.73 = 91,738.02 : x
2. Step 2: Convert to fraction form
   120,081.54/165,626.73 = 91,738.02/x
3. Step 3: Cross multiply
   120,081.54x = 165,626.73 × 91,738.02
4. Step 4: Simplify right side
   120,081.54x = 15,194,268,269.27
5. Step 5: Solve for x
   x = 15,194,268,269.27/120,081.54
6. Step 6: Final answer
   x = 126,532.92