Finding the Fourth Proportional to 105,787.94, 158,680.23 and 42,606.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,787.94 : 158,680.23 = 42,606.57 : x
2. Step 2: Convert to fraction form
   105,787.94/158,680.23 = 42,606.57/x
3. Step 3: Cross multiply
   105,787.94x = 158,680.23 × 42,606.57
4. Step 4: Simplify right side
   105,787.94x = 6,760,821,002.05
5. Step 5: Solve for x
   x = 6,760,821,002.05/105,787.94
6. Step 6: Final answer
   x = 63,909.18