Finding the Fourth Proportional to 42,772.86, 64,124.60 and 17,831.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,772.86 : 64,124.60 = 17,831.61 : x
2. Step 2: Convert to fraction form
   42,772.86/64,124.60 = 17,831.61/x
3. Step 3: Cross multiply
   42,772.86x = 64,124.60 × 17,831.61
4. Step 4: Simplify right side
   42,772.86x = 1,143,444,769.45
5. Step 5: Solve for x
   x = 1,143,444,769.45/42,772.86
6. Step 6: Final answer
   x = 26,732.95