Finding the Fourth Proportional to 42,012.52, 63,019.98 and 15,712.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.52 : 63,019.98 = 15,712.24 : x
2. Step 2: Convert to fraction form
   42,012.52/63,019.98 = 15,712.24/x
3. Step 3: Cross multiply
   42,012.52x = 63,019.98 × 15,712.24
4. Step 4: Simplify right side
   42,012.52x = 990,185,050.56
5. Step 5: Solve for x
   x = 990,185,050.56/42,012.52
6. Step 6: Final answer
   x = 23,568.81