Finding the Fourth Proportional to 45,016.18, 67,518.79 and 18,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,016.18 : 67,518.79 = 18,717.50 : x
2. Step 2: Convert to fraction form
   45,016.18/67,518.79 = 18,717.50/x
3. Step 3: Cross multiply
   45,016.18x = 67,518.79 × 18,717.50
4. Step 4: Simplify right side
   45,016.18x = 1,263,783,073.83
5. Step 5: Solve for x
   x = 1,263,783,073.83/45,016.18
6. Step 6: Final answer
   x = 28,073.98