Finding the Fourth Proportional to 52,456.16, 78,695.42 and 16,919.47

Step by Step Solution

1. Step 1: Write the proportion equation
   52,456.16 : 78,695.42 = 16,919.47 : x
2. Step 2: Convert to fraction form
   52,456.16/78,695.42 = 16,919.47/x
3. Step 3: Cross multiply
   52,456.16x = 78,695.42 × 16,919.47
4. Step 4: Simplify right side
   52,456.16x = 1,331,484,938.50
5. Step 5: Solve for x
   x = 1,331,484,938.50/52,456.16
6. Step 6: Final answer
   x = 25,382.82