Finding the Fourth Proportional to 42,217.49, 63,308.72 and 15,564.99

Step by Step Solution

1. Step 1: Write the proportion equation
   42,217.49 : 63,308.72 = 15,564.99 : x
2. Step 2: Convert to fraction form
   42,217.49/63,308.72 = 15,564.99/x
3. Step 3: Cross multiply
   42,217.49x = 63,308.72 × 15,564.99
4. Step 4: Simplify right side
   42,217.49x = 985,399,515.89
5. Step 5: Solve for x
   x = 985,399,515.89/42,217.49
6. Step 6: Final answer
   x = 23,341.03