Finding the Fourth Proportional to 105,396.81, 158,095.49 and 43,067.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,396.81 : 158,095.49 = 43,067.31 : x
2. Step 2: Convert to fraction form
   105,396.81/158,095.49 = 43,067.31/x
3. Step 3: Cross multiply
   105,396.81x = 158,095.49 × 43,067.31
4. Step 4: Simplify right side
   105,396.81x = 6,808,747,477.43
5. Step 5: Solve for x
   x = 6,808,747,477.43/105,396.81
6. Step 6: Final answer
   x = 64,601.08