Finding the Fourth Proportional to 42,978.91, 64,468.30 and 16,324.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,978.91 : 64,468.30 = 16,324.84 : x
2. Step 2: Convert to fraction form
   42,978.91/64,468.30 = 16,324.84/x
3. Step 3: Cross multiply
   42,978.91x = 64,468.30 × 16,324.84
4. Step 4: Simplify right side
   42,978.91x = 1,052,434,682.57
5. Step 5: Solve for x
   x = 1,052,434,682.57/42,978.91
6. Step 6: Final answer
   x = 24,487.24