Finding the Fourth Proportional to 108,974.07, 150,451.31 and 86,404.23

Step by Step Solution

1. Step 1: Write the proportion equation
   108,974.07 : 150,451.31 = 86,404.23 : x
2. Step 2: Convert to fraction form
   108,974.07/150,451.31 = 86,404.23/x
3. Step 3: Cross multiply
   108,974.07x = 150,451.31 × 86,404.23
4. Step 4: Simplify right side
   108,974.07x = 12,999,629,593.04
5. Step 5: Solve for x
   x = 12,999,629,593.04/108,974.07
6. Step 6: Final answer
   x = 119,291.03