Finding the Fourth Proportional to 42,774.54, 64,134.46 and 17,831.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,774.54 : 64,134.46 = 17,831.80 : x
2. Step 2: Convert to fraction form
   42,774.54/64,134.46 = 17,831.80/x
3. Step 3: Cross multiply
   42,774.54x = 64,134.46 × 17,831.80
4. Step 4: Simplify right side
   42,774.54x = 1,143,632,863.83
5. Step 5: Solve for x
   x = 1,143,632,863.83/42,774.54
6. Step 6: Final answer
   x = 26,736.30