Finding the Fourth Proportional to 42,662.70, 64,010.70 and 17,696.43

Step by Step Solution

1. Step 1: Write the proportion equation
   42,662.70 : 64,010.70 = 17,696.43 : x
2. Step 2: Convert to fraction form
   42,662.70/64,010.70 = 17,696.43/x
3. Step 3: Cross multiply
   42,662.70x = 64,010.70 × 17,696.43
4. Step 4: Simplify right side
   42,662.70x = 1,132,760,871.80
5. Step 5: Solve for x
   x = 1,132,760,871.80/42,662.70
6. Step 6: Final answer
   x = 26,551.55