Finding the Fourth Proportional to 268,667.16, 402,777.18 and 126,441.69

Step by Step Solution

1. Step 1: Write the proportion equation
   268,667.16 : 402,777.18 = 126,441.69 : x
2. Step 2: Convert to fraction form
   268,667.16/402,777.18 = 126,441.69/x
3. Step 3: Cross multiply
   268,667.16x = 402,777.18 × 126,441.69
4. Step 4: Simplify right side
   268,667.16x = 50,927,827,332.63
5. Step 5: Solve for x
   x = 50,927,827,332.63/268,667.16
6. Step 6: Final answer
   x = 189,557.32