Finding the Fourth Proportional to 142,947.50, 197,262.50 and 79,291.22

Step by Step Solution

1. Step 1: Write the proportion equation
   142,947.50 : 197,262.50 = 79,291.22 : x
2. Step 2: Convert to fraction form
   142,947.50/197,262.50 = 79,291.22/x
3. Step 3: Cross multiply
   142,947.50x = 197,262.50 × 79,291.22
4. Step 4: Simplify right side
   142,947.50x = 15,641,182,902.48
5. Step 5: Solve for x
   x = 15,641,182,902.48/142,947.50
6. Step 6: Final answer
   x = 109,419.08