Finding the Fourth Proportional to 142,065.30, 196,023.87 and 91,087.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,065.30 : 196,023.87 = 91,087.14 : x
2. Step 2: Convert to fraction form
   142,065.30/196,023.87 = 91,087.14/x
3. Step 3: Cross multiply
   142,065.30x = 196,023.87 × 91,087.14
4. Step 4: Simplify right side
   142,065.30x = 17,855,253,690.03
5. Step 5: Solve for x
   x = 17,855,253,690.03/142,065.30
6. Step 6: Final answer
   x = 125,683.43