Finding the Fourth Proportional to 105,998.21, 159,002.78 and 27,113.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,998.21 : 159,002.78 = 27,113.12 : x
2. Step 2: Convert to fraction form
   105,998.21/159,002.78 = 27,113.12/x
3. Step 3: Cross multiply
   105,998.21x = 159,002.78 × 27,113.12
4. Step 4: Simplify right side
   105,998.21x = 4,311,061,454.47
5. Step 5: Solve for x
   x = 4,311,061,454.47/105,998.21
6. Step 6: Final answer
   x = 40,671.08