Finding the Fourth Proportional to 45,105.32, 67,664.46 and 13,943

Step by Step Solution

1. Step 1: Write the proportion equation
   45,105.32 : 67,664.46 = 13,943 : x
2. Step 2: Convert to fraction form
   45,105.32/67,664.46 = 13,943/x
3. Step 3: Cross multiply
   45,105.32x = 67,664.46 × 13,943
4. Step 4: Simplify right side
   45,105.32x = 943,445,565.78
5. Step 5: Solve for x
   x = 943,445,565.78/45,105.32
6. Step 6: Final answer
   x = 20,916.50