Finding the Fourth Proportional to 142,975.83, 197,311.90 and 86,376.27

Step by Step Solution

1. Step 1: Write the proportion equation
   142,975.83 : 197,311.90 = 86,376.27 : x
2. Step 2: Convert to fraction form
   142,975.83/197,311.90 = 86,376.27/x
3. Step 3: Cross multiply
   142,975.83x = 197,311.90 × 86,376.27
4. Step 4: Simplify right side
   142,975.83x = 17,043,066,634.55
5. Step 5: Solve for x
   x = 17,043,066,634.55/142,975.83
6. Step 6: Final answer
   x = 119,202.43