Finding the Fourth Proportional to 142,388.25, 213,914.58 and 83,265.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,388.25 : 213,914.58 = 83,265.54 : x
2. Step 2: Convert to fraction form
   142,388.25/213,914.58 = 83,265.54/x
3. Step 3: Cross multiply
   142,388.25x = 213,914.58 × 83,265.54
4. Step 4: Simplify right side
   142,388.25x = 17,811,713,017.57
5. Step 5: Solve for x
   x = 17,811,713,017.57/142,388.25
6. Step 6: Final answer
   x = 125,092.58