Finding the Fourth Proportional to 51,665.47, 71,289.86 and 30,441.85

Step by Step Solution

1. Step 1: Write the proportion equation
   51,665.47 : 71,289.86 = 30,441.85 : x
2. Step 2: Convert to fraction form
   51,665.47/71,289.86 = 30,441.85/x
3. Step 3: Cross multiply
   51,665.47x = 71,289.86 × 30,441.85
4. Step 4: Simplify right side
   51,665.47x = 2,170,194,894.21
5. Step 5: Solve for x
   x = 2,170,194,894.21/51,665.47
6. Step 6: Final answer
   x = 42,004.75