Finding the Fourth Proportional to 42,321.30, 63,486.16 and 15,674.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,321.30 : 63,486.16 = 15,674.42 : x
2. Step 2: Convert to fraction form
   42,321.30/63,486.16 = 15,674.42/x
3. Step 3: Cross multiply
   42,321.30x = 63,486.16 × 15,674.42
4. Step 4: Simplify right side
   42,321.30x = 995,108,736.03
5. Step 5: Solve for x
   x = 995,108,736.03/42,321.30
6. Step 6: Final answer
   x = 23,513.19