Finding the Fourth Proportional to 57,978.89, 86,969.74 and 32,839.32

Step by Step Solution

1. Step 1: Write the proportion equation
   57,978.89 : 86,969.74 = 32,839.32 : x
2. Step 2: Convert to fraction form
   57,978.89/86,969.74 = 32,839.32/x
3. Step 3: Cross multiply
   57,978.89x = 86,969.74 × 32,839.32
4. Step 4: Simplify right side
   57,978.89x = 2,856,027,122.18
5. Step 5: Solve for x
   x = 2,856,027,122.18/57,978.89
6. Step 6: Final answer
   x = 49,259.78