Finding the Fourth Proportional to 105,570.78, 158,361.60 and 26,685.68

Step by Step Solution

1. Step 1: Write the proportion equation
   105,570.78 : 158,361.60 = 26,685.68 : x
2. Step 2: Convert to fraction form
   105,570.78/158,361.60 = 26,685.68/x
3. Step 3: Cross multiply
   105,570.78x = 158,361.60 × 26,685.68
4. Step 4: Simplify right side
   105,570.78x = 4,225,986,981.89
5. Step 5: Solve for x
   x = 4,225,986,981.89/105,570.78
6. Step 6: Final answer
   x = 40,029.89