Finding the Fourth Proportional to 427,314.56, 640,519.86 and 160,959.83

Step by Step Solution

1. Step 1: Write the proportion equation
   427,314.56 : 640,519.86 = 160,959.83 : x
2. Step 2: Convert to fraction form
   427,314.56/640,519.86 = 160,959.83/x
3. Step 3: Cross multiply
   427,314.56x = 640,519.86 × 160,959.83
4. Step 4: Simplify right side
   427,314.56x = 103,097,967,777.22
5. Step 5: Solve for x
   x = 103,097,967,777.22/427,314.56
6. Step 6: Final answer
   x = 241,269.49