Finding the Fourth Proportional to 42,664.80, 63,969.72 and 17,722.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,664.80 : 63,969.72 = 17,722.02 : x
2. Step 2: Convert to fraction form
   42,664.80/63,969.72 = 17,722.02/x
3. Step 3: Cross multiply
   42,664.80x = 63,969.72 × 17,722.02
4. Step 4: Simplify right side
   42,664.80x = 1,133,672,657.23
5. Step 5: Solve for x
   x = 1,133,672,657.23/42,664.80
6. Step 6: Final answer
   x = 26,571.62