Finding the Fourth Proportional to 105,366.89, 158,111.87 and 42,217.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,366.89 : 158,111.87 = 42,217.27 : x
2. Step 2: Convert to fraction form
   105,366.89/158,111.87 = 42,217.27/x
3. Step 3: Cross multiply
   105,366.89x = 158,111.87 × 42,217.27
4. Step 4: Simplify right side
   105,366.89x = 6,675,050,899.63
5. Step 5: Solve for x
   x = 6,675,050,899.63/105,366.89
6. Step 6: Final answer
   x = 63,350.55