Finding the Fourth Proportional to 45,407.29, 68,113.49 and 13,818.38

Step by Step Solution

1. Step 1: Write the proportion equation
   45,407.29 : 68,113.49 = 13,818.38 : x
2. Step 2: Convert to fraction form
   45,407.29/68,113.49 = 13,818.38/x
3. Step 3: Cross multiply
   45,407.29x = 68,113.49 × 13,818.38
4. Step 4: Simplify right side
   45,407.29x = 941,218,037.35
5. Step 5: Solve for x
   x = 941,218,037.35/45,407.29
6. Step 6: Final answer
   x = 20,728.35