Finding the Fourth Proportional to 142,819.48, 197,072.76 and 79,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,819.48 : 197,072.76 = 79,156.72 : x
2. Step 2: Convert to fraction form
   142,819.48/197,072.76 = 79,156.72/x
3. Step 3: Cross multiply
   142,819.48x = 197,072.76 × 79,156.72
4. Step 4: Simplify right side
   142,819.48x = 15,599,633,282.95
5. Step 5: Solve for x
   x = 15,599,633,282.95/142,819.48
6. Step 6: Final answer
   x = 109,226.23