Finding the Fourth Proportional to 45,112.48, 67,650.72 and 13,939.36

Step by Step Solution

1. Step 1: Write the proportion equation
   45,112.48 : 67,650.72 = 13,939.36 : x
2. Step 2: Convert to fraction form
   45,112.48/67,650.72 = 13,939.36/x
3. Step 3: Cross multiply
   45,112.48x = 67,650.72 × 13,939.36
4. Step 4: Simplify right side
   45,112.48x = 943,007,740.34
5. Step 5: Solve for x
   x = 943,007,740.34/45,112.48
6. Step 6: Final answer
   x = 20,903.48