Finding the Fourth Proportional to 105,976.32, 158,996.28 and 42,763.92

Step by Step Solution

1. Step 1: Write the proportion equation
   105,976.32 : 158,996.28 = 42,763.92 : x
2. Step 2: Convert to fraction form
   105,976.32/158,996.28 = 42,763.92/x
3. Step 3: Cross multiply
   105,976.32x = 158,996.28 × 42,763.92
4. Step 4: Simplify right side
   105,976.32x = 6,799,304,198.22
5. Step 5: Solve for x
   x = 6,799,304,198.22/105,976.32
6. Step 6: Final answer
   x = 64,158.71