Finding the Fourth Proportional to 463,499.50, 639,629.31 and 251,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   463,499.50 : 639,629.31 = 251,531.50 : x
2. Step 2: Convert to fraction form
   463,499.50/639,629.31 = 251,531.50/x
3. Step 3: Cross multiply
   463,499.50x = 639,629.31 × 251,531.50
4. Step 4: Simplify right side
   463,499.50x = 160,886,919,788.27
5. Step 5: Solve for x
   x = 160,886,919,788.27/463,499.50
6. Step 6: Final answer
   x = 347,113.47