Finding the Fourth Proportional to 111,867.02, 154,433.61 and 86,315.97

Step by Step Solution

1. Step 1: Write the proportion equation
   111,867.02 : 154,433.61 = 86,315.97 : x
2. Step 2: Convert to fraction form
   111,867.02/154,433.61 = 86,315.97/x
3. Step 3: Cross multiply
   111,867.02x = 154,433.61 × 86,315.97
4. Step 4: Simplify right side
   111,867.02x = 13,330,086,847.75
5. Step 5: Solve for x
   x = 13,330,086,847.75/111,867.02
6. Step 6: Final answer
   x = 119,160.12