Finding the Fourth Proportional to 142,418.25, 196,358.49 and 91,340.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,418.25 : 196,358.49 = 91,340.82 : x
2. Step 2: Convert to fraction form
   142,418.25/196,358.49 = 91,340.82/x
3. Step 3: Cross multiply
   142,418.25x = 196,358.49 × 91,340.82
4. Step 4: Simplify right side
   142,418.25x = 17,935,545,490.56
5. Step 5: Solve for x
   x = 17,935,545,490.56/142,418.25
6. Step 6: Final answer
   x = 125,935.72