Finding the Fourth Proportional to 429,171.48, 591,845.22 and 257,061.96

Step by Step Solution

1. Step 1: Write the proportion equation
   429,171.48 : 591,845.22 = 257,061.96 : x
2. Step 2: Convert to fraction form
   429,171.48/591,845.22 = 257,061.96/x
3. Step 3: Cross multiply
   429,171.48x = 591,845.22 × 257,061.96
4. Step 4: Simplify right side
   429,171.48x = 152,140,892,269.83
5. Step 5: Solve for x
   x = 152,140,892,269.83/429,171.48
6. Step 6: Final answer
   x = 354,499.07