Finding the Fourth Proportional to 105,989.16, 158,982.12 and 27,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,989.16 : 158,982.12 = 27,102.72 : x
2. Step 2: Convert to fraction form
   105,989.16/158,982.12 = 27,102.72/x
3. Step 3: Cross multiply
   105,989.16x = 158,982.12 × 27,102.72
4. Step 4: Simplify right side
   105,989.16x = 4,308,847,883.37
5. Step 5: Solve for x
   x = 4,308,847,883.37/105,989.16
6. Step 6: Final answer
   x = 40,653.67