Finding the Fourth Proportional to 50,109.50, 75,168.70 and 13,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,109.50 : 75,168.70 = 13,173.50 : x
2. Step 2: Convert to fraction form
   50,109.50/75,168.70 = 13,173.50/x
3. Step 3: Cross multiply
   50,109.50x = 75,168.70 × 13,173.50
4. Step 4: Simplify right side
   50,109.50x = 990,234,869.45
5. Step 5: Solve for x
   x = 990,234,869.45/50,109.50
6. Step 6: Final answer
   x = 19,761.42