Finding the Fourth Proportional to 42,782.76, 64,185.09 and 17,814.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,782.76 : 64,185.09 = 17,814.54 : x
2. Step 2: Convert to fraction form
   42,782.76/64,185.09 = 17,814.54/x
3. Step 3: Cross multiply
   42,782.76x = 64,185.09 × 17,814.54
4. Step 4: Simplify right side
   42,782.76x = 1,143,427,853.21
5. Step 5: Solve for x
   x = 1,143,427,853.21/42,782.76
6. Step 6: Final answer
   x = 26,726.37