Finding the Fourth Proportional to 42,722.37, 64,081.62 and 14,644.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,722.37 : 64,081.62 = 14,644.92 : x
2. Step 2: Convert to fraction form
   42,722.37/64,081.62 = 14,644.92/x
3. Step 3: Cross multiply
   42,722.37x = 64,081.62 × 14,644.92
4. Step 4: Simplify right side
   42,722.37x = 938,470,198.37
5. Step 5: Solve for x
   x = 938,470,198.37/42,722.37
6. Step 6: Final answer
   x = 21,966.72