Finding the Fourth Proportional to 105,426.25, 158,101.30 and 42,260.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,426.25 : 158,101.30 = 42,260.83 : x
2. Step 2: Convert to fraction form
   105,426.25/158,101.30 = 42,260.83/x
3. Step 3: Cross multiply
   105,426.25x = 158,101.30 × 42,260.83
4. Step 4: Simplify right side
   105,426.25x = 6,681,492,162.08
5. Step 5: Solve for x
   x = 6,681,492,162.08/105,426.25
6. Step 6: Final answer
   x = 63,375.98