Finding the Fourth Proportional to 42,578.16, 63,870.48 and 14,489.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,578.16 : 63,870.48 = 14,489.52 : x
2. Step 2: Convert to fraction form
   42,578.16/63,870.48 = 14,489.52/x
3. Step 3: Cross multiply
   42,578.16x = 63,870.48 × 14,489.52
4. Step 4: Simplify right side
   42,578.16x = 925,452,597.37
5. Step 5: Solve for x
   x = 925,452,597.37/42,578.16
6. Step 6: Final answer
   x = 21,735.38