Finding the Fourth Proportional to 105,624.72, 158,457.06 and 42,449.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,624.72 : 158,457.06 = 42,449.76 : x
2. Step 2: Convert to fraction form
   105,624.72/158,457.06 = 42,449.76/x
3. Step 3: Cross multiply
   105,624.72x = 158,457.06 × 42,449.76
4. Step 4: Simplify right side
   105,624.72x = 6,726,464,167.31
5. Step 5: Solve for x
   x = 6,726,464,167.31/105,624.72
6. Step 6: Final answer
   x = 63,682.67