Finding the Fourth Proportional to 41,710.68, 57,517.59 and 28,978.29

Step by Step Solution

1. Step 1: Write the proportion equation
   41,710.68 : 57,517.59 = 28,978.29 : x
2. Step 2: Convert to fraction form
   41,710.68/57,517.59 = 28,978.29/x
3. Step 3: Cross multiply
   41,710.68x = 57,517.59 × 28,978.29
4. Step 4: Simplify right side
   41,710.68x = 1,666,761,511.79
5. Step 5: Solve for x
   x = 1,666,761,511.79/41,710.68
6. Step 6: Final answer
   x = 39,960.07