Finding the Fourth Proportional to 429,173.48, 591,847.98 and 257,063.96

Step by Step Solution

1. Step 1: Write the proportion equation
   429,173.48 : 591,847.98 = 257,063.96 : x
2. Step 2: Convert to fraction form
   429,173.48/591,847.98 = 257,063.96/x
3. Step 3: Cross multiply
   429,173.48x = 591,847.98 × 257,063.96
4. Step 4: Simplify right side
   429,173.48x = 152,142,785,456.80
5. Step 5: Solve for x
   x = 152,142,785,456.80/429,173.48
6. Step 6: Final answer
   x = 354,501.83