Finding the Fourth Proportional to 105,388.54, 158,050.90 and 55,441.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,388.54 : 158,050.90 = 55,441.09 : x
2. Step 2: Convert to fraction form
   105,388.54/158,050.90 = 55,441.09/x
3. Step 3: Cross multiply
   105,388.54x = 158,050.90 × 55,441.09
4. Step 4: Simplify right side
   105,388.54x = 8,762,514,171.48
5. Step 5: Solve for x
   x = 8,762,514,171.48/105,388.54
6. Step 6: Final answer
   x = 83,144.85