Finding the Fourth Proportional to 45,651.30, 68,471.55 and 12,369.30

Step by Step Solution

1. Step 1: Write the proportion equation
   45,651.30 : 68,471.55 = 12,369.30 : x
2. Step 2: Convert to fraction form
   45,651.30/68,471.55 = 12,369.30/x
3. Step 3: Cross multiply
   45,651.30x = 68,471.55 × 12,369.30
4. Step 4: Simplify right side
   45,651.30x = 846,945,143.42
5. Step 5: Solve for x
   x = 846,945,143.42/45,651.30
6. Step 6: Final answer
   x = 18,552.49