Finding the Fourth Proportional to 105,940.24, 158,910.59 and 25,978.55

Step by Step Solution

1. Step 1: Write the proportion equation
   105,940.24 : 158,910.59 = 25,978.55 : x
2. Step 2: Convert to fraction form
   105,940.24/158,910.59 = 25,978.55/x
3. Step 3: Cross multiply
   105,940.24x = 158,910.59 × 25,978.55
4. Step 4: Simplify right side
   105,940.24x = 4,128,265,978.24
5. Step 5: Solve for x
   x = 4,128,265,978.24/105,940.24
6. Step 6: Final answer
   x = 38,967.88