Finding the Fourth Proportional to 29,083.61, 40,129.15 and 16,978.59

Step by Step Solution

1. Step 1: Write the proportion equation
   29,083.61 : 40,129.15 = 16,978.59 : x
2. Step 2: Convert to fraction form
   29,083.61/40,129.15 = 16,978.59/x
3. Step 3: Cross multiply
   29,083.61x = 40,129.15 × 16,978.59
4. Step 4: Simplify right side
   29,083.61x = 681,336,300.01
5. Step 5: Solve for x
   x = 681,336,300.01/29,083.61
6. Step 6: Final answer
   x = 23,426.82