Finding the Fourth Proportional to 705,091.68, 1,057,412.88 and 231,667.20

Step by Step Solution

1. Step 1: Write the proportion equation
   705,091.68 : 1,057,412.88 = 231,667.20 : x
2. Step 2: Convert to fraction form
   705,091.68/1,057,412.88 = 231,667.20/x
3. Step 3: Cross multiply
   705,091.68x = 1,057,412.88 × 231,667.20
4. Step 4: Simplify right side
   705,091.68x = 244,967,881,153.54
5. Step 5: Solve for x
   x = 244,967,881,153.54/705,091.68
6. Step 6: Final answer
   x = 347,426.99