Finding the Fourth Proportional to 51,619.89, 71,236.23 and 30,109.05

Step by Step Solution

1. Step 1: Write the proportion equation
   51,619.89 : 71,236.23 = 30,109.05 : x
2. Step 2: Convert to fraction form
   51,619.89/71,236.23 = 30,109.05/x
3. Step 3: Cross multiply
   51,619.89x = 71,236.23 × 30,109.05
4. Step 4: Simplify right side
   51,619.89x = 2,144,855,210.88
5. Step 5: Solve for x
   x = 2,144,855,210.88/51,619.89
6. Step 6: Final answer
   x = 41,550.95