Finding the Fourth Proportional to 42,772.22, 64,142.37 and 14,684.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,772.22 : 64,142.37 = 14,684.31 : x
2. Step 2: Convert to fraction form
   42,772.22/64,142.37 = 14,684.31/x
3. Step 3: Cross multiply
   42,772.22x = 64,142.37 × 14,684.31
4. Step 4: Simplify right side
   42,772.22x = 941,886,445.21
5. Step 5: Solve for x
   x = 941,886,445.21/42,772.22
6. Step 6: Final answer
   x = 22,020.99