Finding the Fourth Proportional to 111,662.20, 167,201.70 and 72,004.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,662.20 : 167,201.70 = 72,004.60 : x
2. Step 2: Convert to fraction form
   111,662.20/167,201.70 = 72,004.60/x
3. Step 3: Cross multiply
   111,662.20x = 167,201.70 × 72,004.60
4. Step 4: Simplify right side
   111,662.20x = 12,039,291,527.82
5. Step 5: Solve for x
   x = 12,039,291,527.82/111,662.20
6. Step 6: Final answer
   x = 107,818.86