Finding the Fourth Proportional to 79,218.72, 118,831.86 and 20,054.88

Step by Step Solution

1. Step 1: Write the proportion equation
   79,218.72 : 118,831.86 = 20,054.88 : x
2. Step 2: Convert to fraction form
   79,218.72/118,831.86 = 20,054.88/x
3. Step 3: Cross multiply
   79,218.72x = 118,831.86 × 20,054.88
4. Step 4: Simplify right side
   79,218.72x = 2,383,158,692.48
5. Step 5: Solve for x
   x = 2,383,158,692.48/79,218.72
6. Step 6: Final answer
   x = 30,083.28