Finding the Fourth Proportional to 47,012.70, 64,864.59 and 30,255.42

Step by Step Solution

1. Step 1: Write the proportion equation
   47,012.70 : 64,864.59 = 30,255.42 : x
2. Step 2: Convert to fraction form
   47,012.70/64,864.59 = 30,255.42/x
3. Step 3: Cross multiply
   47,012.70x = 64,864.59 × 30,255.42
4. Step 4: Simplify right side
   47,012.70x = 1,962,505,413.58
5. Step 5: Solve for x
   x = 1,962,505,413.58/47,012.70
6. Step 6: Final answer
   x = 41,744.15