Finding the Fourth Proportional to 42,485.91, 63,691.60 and 16,173.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,485.91 : 63,691.60 = 16,173.15 : x
2. Step 2: Convert to fraction form
   42,485.91/63,691.60 = 16,173.15/x
3. Step 3: Cross multiply
   42,485.91x = 63,691.60 × 16,173.15
4. Step 4: Simplify right side
   42,485.91x = 1,030,093,800.54
5. Step 5: Solve for x
   x = 1,030,093,800.54/42,485.91
6. Step 6: Final answer
   x = 24,245.54