Finding the Fourth Proportional to 111,709.28, 154,158.04 and 60,720.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,709.28 : 154,158.04 = 60,720.72 : x
2. Step 2: Convert to fraction form
   111,709.28/154,158.04 = 60,720.72/x
3. Step 3: Cross multiply
   111,709.28x = 154,158.04 × 60,720.72
4. Step 4: Simplify right side
   111,709.28x = 9,360,587,182.59
5. Step 5: Solve for x
   x = 9,360,587,182.59/111,709.28
6. Step 6: Final answer
   x = 83,794.18