Finding the Fourth Proportional to 71,067.16, 106,578.06 and 28,947.16

Step by Step Solution

1. Step 1: Write the proportion equation
   71,067.16 : 106,578.06 = 28,947.16 : x
2. Step 2: Convert to fraction form
   71,067.16/106,578.06 = 28,947.16/x
3. Step 3: Cross multiply
   71,067.16x = 106,578.06 × 28,947.16
4. Step 4: Simplify right side
   71,067.16x = 3,085,132,155.31
5. Step 5: Solve for x
   x = 3,085,132,155.31/71,067.16
6. Step 6: Final answer
   x = 43,411.50