Finding the Fourth Proportional to 142,710.12, 196,940.16 and 79,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,710.12 : 196,940.16 = 79,047.72 : x
2. Step 2: Convert to fraction form
   142,710.12/196,940.16 = 79,047.72/x
3. Step 3: Cross multiply
   142,710.12x = 196,940.16 × 79,047.72
4. Step 4: Simplify right side
   142,710.12x = 15,567,670,624.44
5. Step 5: Solve for x
   x = 15,567,670,624.44/142,710.12
6. Step 6: Final answer
   x = 109,085.96