Finding the Fourth Proportional to 105,872.52, 158,871.96 and 42,722.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,872.52 : 158,871.96 = 42,722.88 : x
2. Step 2: Convert to fraction form
   105,872.52/158,871.96 = 42,722.88/x
3. Step 3: Cross multiply
   105,872.52x = 158,871.96 × 42,722.88
4. Step 4: Simplify right side
   105,872.52x = 6,787,467,682.44
5. Step 5: Solve for x
   x = 6,787,467,682.44/105,872.52
6. Step 6: Final answer
   x = 64,109.82