Finding the Fourth Proportional to 79,997.62, 119,994.81 and 20,831.98

Step by Step Solution

1. Step 1: Write the proportion equation
   79,997.62 : 119,994.81 = 20,831.98 : x
2. Step 2: Convert to fraction form
   79,997.62/119,994.81 = 20,831.98/x
3. Step 3: Cross multiply
   79,997.62x = 119,994.81 × 20,831.98
4. Step 4: Simplify right side
   79,997.62x = 2,499,729,482.02
5. Step 5: Solve for x
   x = 2,499,729,482.02/79,997.62
6. Step 6: Final answer
   x = 31,247.55