Finding the Fourth Proportional to 42,715.43, 64,049.15 and 17,738.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,715.43 : 64,049.15 = 17,738.68 : x
2. Step 2: Convert to fraction form
   42,715.43/64,049.15 = 17,738.68/x
3. Step 3: Cross multiply
   42,715.43x = 64,049.15 × 17,738.68
4. Step 4: Simplify right side
   42,715.43x = 1,136,147,260.35
5. Step 5: Solve for x
   x = 1,136,147,260.35/42,715.43
6. Step 6: Final answer
   x = 26,598.05