Finding the Fourth Proportional to 111,816.94, 167,504.01 and 72,401.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,816.94 : 167,504.01 = 72,401.80 : x
2. Step 2: Convert to fraction form
   111,816.94/167,504.01 = 72,401.80/x
3. Step 3: Cross multiply
   111,816.94x = 167,504.01 × 72,401.80
4. Step 4: Simplify right side
   111,816.94x = 12,127,591,831.22
5. Step 5: Solve for x
   x = 12,127,591,831.22/111,816.94
6. Step 6: Final answer
   x = 108,459.34