Finding the Fourth Proportional to 105,665.14, 158,498.34 and 26,779.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,665.14 : 158,498.34 = 26,779.60 : x
2. Step 2: Convert to fraction form
   105,665.14/158,498.34 = 26,779.60/x
3. Step 3: Cross multiply
   105,665.14x = 158,498.34 × 26,779.60
4. Step 4: Simplify right side
   105,665.14x = 4,244,521,219.47
5. Step 5: Solve for x
   x = 4,244,521,219.47/105,665.14
6. Step 6: Final answer
   x = 40,169.55