Finding the Fourth Proportional to 30,740.09, 42,405.27 and 19,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,740.09 : 42,405.27 = 19,405.50 : x
2. Step 2: Convert to fraction form
   30,740.09/42,405.27 = 19,405.50/x
3. Step 3: Cross multiply
   30,740.09x = 42,405.27 × 19,405.50
4. Step 4: Simplify right side
   30,740.09x = 822,895,466.99
5. Step 5: Solve for x
   x = 822,895,466.99/30,740.09
6. Step 6: Final answer
   x = 26,769.46