Finding the Fourth Proportional to 105,678.06, 158,514.79 and 25,716.39

Step by Step Solution

1. Step 1: Write the proportion equation
   105,678.06 : 158,514.79 = 25,716.39 : x
2. Step 2: Convert to fraction form
   105,678.06/158,514.79 = 25,716.39/x
3. Step 3: Cross multiply
   105,678.06x = 158,514.79 × 25,716.39
4. Step 4: Simplify right side
   105,678.06x = 4,076,427,441.41
5. Step 5: Solve for x
   x = 4,076,427,441.41/105,678.06
6. Step 6: Final answer
   x = 38,574.02