Finding the Fourth Proportional to 105,425.25, 158,099.81 and 42,259.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,425.25 : 158,099.81 = 42,259.83 : x
2. Step 2: Convert to fraction form
   105,425.25/158,099.81 = 42,259.83/x
3. Step 3: Cross multiply
   105,425.25x = 158,099.81 × 42,259.83
4. Step 4: Simplify right side
   105,425.25x = 6,681,270,882.33
5. Step 5: Solve for x
   x = 6,681,270,882.33/105,425.25
6. Step 6: Final answer
   x = 63,374.48