Finding the Fourth Proportional to 111,819.96, 167,807.70 and 72,279

Step by Step Solution

1. Step 1: Write the proportion equation
   111,819.96 : 167,807.70 = 72,279 : x
2. Step 2: Convert to fraction form
   111,819.96/167,807.70 = 72,279/x
3. Step 3: Cross multiply
   111,819.96x = 167,807.70 × 72,279
4. Step 4: Simplify right side
   111,819.96x = 12,128,972,748.30
5. Step 5: Solve for x
   x = 12,128,972,748.30/111,819.96
6. Step 6: Final answer
   x = 108,468.76