Finding the Fourth Proportional to 105,418.20, 158,138.34 and 34,346.37

Step by Step Solution

1. Step 1: Write the proportion equation
   105,418.20 : 158,138.34 = 34,346.37 : x
2. Step 2: Convert to fraction form
   105,418.20/158,138.34 = 34,346.37/x
3. Step 3: Cross multiply
   105,418.20x = 158,138.34 × 34,346.37
4. Step 4: Simplify right side
   105,418.20x = 5,431,477,936.83
5. Step 5: Solve for x
   x = 5,431,477,936.83/105,418.20
6. Step 6: Final answer
   x = 51,523.15