Finding the Fourth Proportional to 42,724.67, 64,086.71 and 17,424.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,724.67 : 64,086.71 = 17,424.07 : x
2. Step 2: Convert to fraction form
   42,724.67/64,086.71 = 17,424.07/x
3. Step 3: Cross multiply
   42,724.67x = 64,086.71 × 17,424.07
4. Step 4: Simplify right side
   42,724.67x = 1,116,651,073.77
5. Step 5: Solve for x
   x = 1,116,651,073.77/42,724.67
6. Step 6: Final answer
   x = 26,135.98