Finding the Fourth Proportional to 111,819.94, 167,508.51 and 72,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,819.94 : 167,508.51 = 72,404.80 : x
2. Step 2: Convert to fraction form
   111,819.94/167,508.51 = 72,404.80/x
3. Step 3: Cross multiply
   111,819.94x = 167,508.51 × 72,404.80
4. Step 4: Simplify right side
   111,819.94x = 12,128,420,164.85
5. Step 5: Solve for x
   x = 12,128,420,164.85/111,819.94
6. Step 6: Final answer
   x = 108,463.84