Finding the Fourth Proportional to 42,759.68, 64,104.94 and 17,818.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,759.68 : 64,104.94 = 17,818.48 : x
2. Step 2: Convert to fraction form
   42,759.68/64,104.94 = 17,818.48/x
3. Step 3: Cross multiply
   42,759.68x = 64,104.94 × 17,818.48
4. Step 4: Simplify right side
   42,759.68x = 1,142,252,591.29
5. Step 5: Solve for x
   x = 1,142,252,591.29/42,759.68
6. Step 6: Final answer
   x = 26,713.31