Finding the Fourth Proportional to 105,616.72, 158,445.06 and 42,441.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,616.72 : 158,445.06 = 42,441.76 : x
2. Step 2: Convert to fraction form
   105,616.72/158,445.06 = 42,441.76/x
3. Step 3: Cross multiply
   105,616.72x = 158,445.06 × 42,441.76
4. Step 4: Simplify right side
   105,616.72x = 6,724,687,209.71
5. Step 5: Solve for x
   x = 6,724,687,209.71/105,616.72
6. Step 6: Final answer
   x = 63,670.67