Finding the Fourth Proportional to 47,570.78, 65,647.31 and 28,458.83

Step by Step Solution

1. Step 1: Write the proportion equation
   47,570.78 : 65,647.31 = 28,458.83 : x
2. Step 2: Convert to fraction form
   47,570.78/65,647.31 = 28,458.83/x
3. Step 3: Cross multiply
   47,570.78x = 65,647.31 × 28,458.83
4. Step 4: Simplify right side
   47,570.78x = 1,868,245,164.72
5. Step 5: Solve for x
   x = 1,868,245,164.72/47,570.78
6. Step 6: Final answer
   x = 39,272.96