Finding the Fourth Proportional to 142,684.12, 196,901.67 and 79,020.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142,684.12 : 196,901.67 = 79,020.55 : x
2. Step 2: Convert to fraction form
   142,684.12/196,901.67 = 79,020.55/x
3. Step 3: Cross multiply
   142,684.12x = 196,901.67 × 79,020.55
4. Step 4: Simplify right side
   142,684.12x = 15,559,278,259.32
5. Step 5: Solve for x
   x = 15,559,278,259.32/142,684.12
6. Step 6: Final answer
   x = 109,047.02