Finding the Fourth Proportional to 105,950.50, 158,863.48 and 42,772.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,950.50 : 158,863.48 = 42,772.69 : x
2. Step 2: Convert to fraction form
   105,950.50/158,863.48 = 42,772.69/x
3. Step 3: Cross multiply
   105,950.50x = 158,863.48 × 42,772.69
4. Step 4: Simplify right side
   105,950.50x = 6,795,018,474.01
5. Step 5: Solve for x
   x = 6,795,018,474.01/105,950.50
6. Step 6: Final answer
   x = 64,133.90