Finding the Fourth Proportional to 45,111.92, 67,671.12 and 13,943.12

Step by Step Solution

1. Step 1: Write the proportion equation
   45,111.92 : 67,671.12 = 13,943.12 : x
2. Step 2: Convert to fraction form
   45,111.92/67,671.12 = 13,943.12/x
3. Step 3: Cross multiply
   45,111.92x = 67,671.12 × 13,943.12
4. Step 4: Simplify right side
   45,111.92x = 943,546,546.69
5. Step 5: Solve for x
   x = 943,546,546.69/45,111.92
6. Step 6: Final answer
   x = 20,915.68