Finding the Fourth Proportional to 142,390.52, 213,917.94 and 83,267.81

Step by Step Solution

1. Step 1: Write the proportion equation
   142,390.52 : 213,917.94 = 83,267.81 : x
2. Step 2: Convert to fraction form
   142,390.52/213,917.94 = 83,267.81/x
3. Step 3: Cross multiply
   142,390.52x = 213,917.94 × 83,267.81
4. Step 4: Simplify right side
   142,390.52x = 17,812,477,313.92
5. Step 5: Solve for x
   x = 17,812,477,313.92/142,390.52
6. Step 6: Final answer
   x = 125,095.95