Finding the Fourth Proportional to 53,471.40, 73,809 and 30,819.42

Step by Step Solution

1. Step 1: Write the proportion equation
   53,471.40 : 73,809 = 30,819.42 : x
2. Step 2: Convert to fraction form
   53,471.40/73,809 = 30,819.42/x
3. Step 3: Cross multiply
   53,471.40x = 73,809 × 30,819.42
4. Step 4: Simplify right side
   53,471.40x = 2,274,750,570.78
5. Step 5: Solve for x
   x = 2,274,750,570.78/53,471.40
6. Step 6: Final answer
   x = 42,541.44