Finding the Fourth Proportional to 42,968.20, 64,436.89 and 14,880.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968.20 : 64,436.89 = 14,880.71 : x
2. Step 2: Convert to fraction form
   42,968.20/64,436.89 = 14,880.71/x
3. Step 3: Cross multiply
   42,968.20x = 64,436.89 × 14,880.71
4. Step 4: Simplify right side
   42,968.20x = 958,866,673.39
5. Step 5: Solve for x
   x = 958,866,673.39/42,968.20
6. Step 6: Final answer
   x = 22,315.73