Finding the Fourth Proportional to 105,604.45, 158,450.42 and 42,469.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,604.45 : 158,450.42 = 42,469.33 : x
2. Step 2: Convert to fraction form
   105,604.45/158,450.42 = 42,469.33/x
3. Step 3: Cross multiply
   105,604.45x = 158,450.42 × 42,469.33
4. Step 4: Simplify right side
   105,604.45x = 6,729,282,567.15
5. Step 5: Solve for x
   x = 6,729,282,567.15/105,604.45
6. Step 6: Final answer
   x = 63,721.58