Finding the Fourth Proportional to 45,105.57, 67,664.84 and 13,943.25

Step by Step Solution

1. Step 1: Write the proportion equation
   45,105.57 : 67,664.84 = 13,943.25 : x
2. Step 2: Convert to fraction form
   45,105.57/67,664.84 = 13,943.25/x
3. Step 3: Cross multiply
   45,105.57x = 67,664.84 × 13,943.25
4. Step 4: Simplify right side
   45,105.57x = 943,467,710.61
5. Step 5: Solve for x
   x = 943,467,710.61/45,105.57
6. Step 6: Final answer
   x = 20,916.88