Finding the Fourth Proportional to 42,557.16, 63,840 and 16,284

Step by Step Solution

1. Step 1: Write the proportion equation
   42,557.16 : 63,840 = 16,284 : x
2. Step 2: Convert to fraction form
   42,557.16/63,840 = 16,284/x
3. Step 3: Cross multiply
   42,557.16x = 63,840 × 16,284
4. Step 4: Simplify right side
   42,557.16x = 1,039,570,560
5. Step 5: Solve for x
   x = 1,039,570,560/42,557.16
6. Step 6: Final answer
   x = 24,427.63