Finding the Fourth Proportional to 57,959.94, 86,952.39 and 17,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   57,959.94 : 86,952.39 = 17,978.12 : x
2. Step 2: Convert to fraction form
   57,959.94/86,952.39 = 17,978.12/x
3. Step 3: Cross multiply
   57,959.94x = 86,952.39 × 17,978.12
4. Step 4: Simplify right side
   57,959.94x = 1,563,240,774.56
5. Step 5: Solve for x
   x = 1,563,240,774.56/57,959.94
6. Step 6: Final answer
   x = 26,971.05