Finding the Fourth Proportional to 142,426.36, 196,470.25 and 91,382.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,426.36 : 196,470.25 = 91,382.10 : x
2. Step 2: Convert to fraction form
   142,426.36/196,470.25 = 91,382.10/x
3. Step 3: Cross multiply
   142,426.36x = 196,470.25 × 91,382.10
4. Step 4: Simplify right side
   142,426.36x = 17,953,864,032.53
5. Step 5: Solve for x
   x = 17,953,864,032.53/142,426.36
6. Step 6: Final answer
   x = 126,057.17