Finding the Fourth Proportional to 42,710.72, 64,066.16 and 14,631

Step by Step Solution

1. Step 1: Write the proportion equation
   42,710.72 : 64,066.16 = 14,631 : x
2. Step 2: Convert to fraction form
   42,710.72/64,066.16 = 14,631/x
3. Step 3: Cross multiply
   42,710.72x = 64,066.16 × 14,631
4. Step 4: Simplify right side
   42,710.72x = 937,351,913.81
5. Step 5: Solve for x
   x = 937,351,913.81/42,710.72
6. Step 6: Final answer
   x = 21,946.53