Finding the Fourth Proportional to 142,751.98, 196,995.18 and 79,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,751.98 : 196,995.18 = 79,088.50 : x
2. Step 2: Convert to fraction form
   142,751.98/196,995.18 = 79,088.50/x
3. Step 3: Cross multiply
   142,751.98x = 196,995.18 × 79,088.50
4. Step 4: Simplify right side
   142,751.98x = 15,580,053,293.43
5. Step 5: Solve for x
   x = 15,580,053,293.43/142,751.98
6. Step 6: Final answer
   x = 109,140.72