Finding the Fourth Proportional to 298,978.03, 414,370.68 and 293,379.31

Step by Step Solution

1. Step 1: Write the proportion equation
   298,978.03 : 414,370.68 = 293,379.31 : x
2. Step 2: Convert to fraction form
   298,978.03/414,370.68 = 293,379.31/x
3. Step 3: Cross multiply
   298,978.03x = 414,370.68 × 293,379.31
4. Step 4: Simplify right side
   298,978.03x = 121,567,783,449.18
5. Step 5: Solve for x
   x = 121,567,783,449.18/298,978.03
6. Step 6: Final answer
   x = 406,611.09