Finding the Fourth Proportional to 617,081.56, 851,651.42 and 345,164.56

Step by Step Solution

1. Step 1: Write the proportion equation
   617,081.56 : 851,651.42 = 345,164.56 : x
2. Step 2: Convert to fraction form
   617,081.56/851,651.42 = 345,164.56/x
3. Step 3: Cross multiply
   617,081.56x = 851,651.42 × 345,164.56
4. Step 4: Simplify right side
   617,081.56x = 293,959,883,802.72
5. Step 5: Solve for x
   x = 293,959,883,802.72/617,081.56
6. Step 6: Final answer
   x = 476,371.20