Finding the Fourth Proportional to 42,861.07, 64,260.46 and 17,908.26

Step by Step Solution

1. Step 1: Write the proportion equation
   42,861.07 : 64,260.46 = 17,908.26 : x
2. Step 2: Convert to fraction form
   42,861.07/64,260.46 = 17,908.26/x
3. Step 3: Cross multiply
   42,861.07x = 64,260.46 × 17,908.26
4. Step 4: Simplify right side
   42,861.07x = 1,150,792,704.10
5. Step 5: Solve for x
   x = 1,150,792,704.10/42,861.07
6. Step 6: Final answer
   x = 26,849.37