Finding the Fourth Proportional to 42,458.83, 63,687.57 and 10,868.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,458.83 : 63,687.57 = 10,868.63 : x
2. Step 2: Convert to fraction form
   42,458.83/63,687.57 = 10,868.63/x
3. Step 3: Cross multiply
   42,458.83x = 63,687.57 × 10,868.63
4. Step 4: Simplify right side
   42,458.83x = 692,196,632.98
5. Step 5: Solve for x
   x = 692,196,632.98/42,458.83
6. Step 6: Final answer
   x = 16,302.77