Finding the Fourth Proportional to 111,944.03, 154,364.37 and 86,454.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111,944.03 : 154,364.37 = 86,454.54 : x
2. Step 2: Convert to fraction form
   111,944.03/154,364.37 = 86,454.54/x
3. Step 3: Cross multiply
   111,944.03x = 154,364.37 × 86,454.54
4. Step 4: Simplify right side
   111,944.03x = 13,345,500,276.54
5. Step 5: Solve for x
   x = 13,345,500,276.54/111,944.03
6. Step 6: Final answer
   x = 119,215.83