Finding the Fourth Proportional to 57,768.89, 86,540.55 and 37,987.47

Step by Step Solution

1. Step 1: Write the proportion equation
   57,768.89 : 86,540.55 = 37,987.47 : x
2. Step 2: Convert to fraction form
   57,768.89/86,540.55 = 37,987.47/x
3. Step 3: Cross multiply
   57,768.89x = 86,540.55 × 37,987.47
4. Step 4: Simplify right side
   57,768.89x = 3,287,456,404.46
5. Step 5: Solve for x
   x = 3,287,456,404.46/57,768.89
6. Step 6: Final answer
   x = 56,907.04