Finding the Fourth Proportional to 45,429.27, 68,139.72 and 12,148.14

Step by Step Solution

1. Step 1: Write the proportion equation
   45,429.27 : 68,139.72 = 12,148.14 : x
2. Step 2: Convert to fraction form
   45,429.27/68,139.72 = 12,148.14/x
3. Step 3: Cross multiply
   45,429.27x = 68,139.72 × 12,148.14
4. Step 4: Simplify right side
   45,429.27x = 827,770,858.12
5. Step 5: Solve for x
   x = 827,770,858.12/45,429.27
6. Step 6: Final answer
   x = 18,221.09