Finding the Fourth Proportional to 45,688.12, 68,540.28 and 16,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   45,688.12 : 68,540.28 = 16,123.12 : x
2. Step 2: Convert to fraction form
   45,688.12/68,540.28 = 16,123.12/x
3. Step 3: Cross multiply
   45,688.12x = 68,540.28 × 16,123.12
4. Step 4: Simplify right side
   45,688.12x = 1,105,083,159.27
5. Step 5: Solve for x
   x = 1,105,083,159.27/45,688.12
6. Step 6: Final answer
   x = 24,187.54