Finding the Fourth Proportional to 111,662.70, 167,202.45 and 72,005.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,662.70 : 167,202.45 = 72,005.10 : x
2. Step 2: Convert to fraction form
   111,662.70/167,202.45 = 72,005.10/x
3. Step 3: Cross multiply
   111,662.70x = 167,202.45 × 72,005.10
4. Step 4: Simplify right side
   111,662.70x = 12,039,429,132.50
5. Step 5: Solve for x
   x = 12,039,429,132.50/111,662.70
6. Step 6: Final answer
   x = 107,819.61