Finding the Fourth Proportional to 111,928.29, 154,563.66 and 71,105.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111,928.29 : 154,563.66 = 71,105.59 : x
2. Step 2: Convert to fraction form
   111,928.29/154,563.66 = 71,105.59/x
3. Step 3: Cross multiply
   111,928.29x = 154,563.66 × 71,105.59
4. Step 4: Simplify right side
   111,928.29x = 10,990,340,236.86
5. Step 5: Solve for x
   x = 10,990,340,236.86/111,928.29
6. Step 6: Final answer
   x = 98,190.91