Finding the Fourth Proportional to 42,615.64, 63,932.69 and 16,320.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,615.64 : 63,932.69 = 16,320.39 : x
2. Step 2: Convert to fraction form
   42,615.64/63,932.69 = 16,320.39/x
3. Step 3: Cross multiply
   42,615.64x = 63,932.69 × 16,320.39
4. Step 4: Simplify right side
   42,615.64x = 1,043,406,434.55
5. Step 5: Solve for x
   x = 1,043,406,434.55/42,615.64
6. Step 6: Final answer
   x = 24,484.12