Finding the Fourth Proportional to 142,861.37, 197,120.89 and 84,707.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,861.37 : 197,120.89 = 84,707.34 : x
2. Step 2: Convert to fraction form
   142,861.37/197,120.89 = 84,707.34/x
3. Step 3: Cross multiply
   142,861.37x = 197,120.89 × 84,707.34
4. Step 4: Simplify right side
   142,861.37x = 16,697,585,617.01
5. Step 5: Solve for x
   x = 16,697,585,617.01/142,861.37
6. Step 6: Final answer
   x = 116,879.64