Finding the Fourth Proportional to 42,456.98, 63,685.22 and 10,866.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,456.98 : 63,685.22 = 10,866.98 : x
2. Step 2: Convert to fraction form
   42,456.98/63,685.22 = 10,866.98/x
3. Step 3: Cross multiply
   42,456.98x = 63,685.22 × 10,866.98
4. Step 4: Simplify right side
   42,456.98x = 692,065,639.27
5. Step 5: Solve for x
   x = 692,065,639.27/42,456.98
6. Step 6: Final answer
   x = 16,300.40