Finding the Fourth Proportional to 39,520.69, 59,327.34 and 31,206.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,520.69 : 59,327.34 = 31,206.31 : x
2. Step 2: Convert to fraction form
   39,520.69/59,327.34 = 31,206.31/x
3. Step 3: Cross multiply
   39,520.69x = 59,327.34 × 31,206.31
4. Step 4: Simplify right side
   39,520.69x = 1,851,387,363.52
5. Step 5: Solve for x
   x = 1,851,387,363.52/39,520.69
6. Step 6: Final answer
   x = 46,846.03