Finding the Fourth Proportional to 105,962.94, 158,909.31 and 42,766.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,962.94 : 158,909.31 = 42,766.74 : x
2. Step 2: Convert to fraction form
   105,962.94/158,909.31 = 42,766.74/x
3. Step 3: Cross multiply
   105,962.94x = 158,909.31 × 42,766.74
4. Step 4: Simplify right side
   105,962.94x = 6,796,033,144.35
5. Step 5: Solve for x
   x = 6,796,033,144.35/105,962.94
6. Step 6: Final answer
   x = 64,135.94