Finding the Fourth Proportional to 257,511,788.72, 355,361,341.56 and 141,618,284.72

Step by Step Solution

1. Step 1: Write the proportion equation
   257,511,788.72 : 355,361,341.56 = 141,618,284.72 : x
2. Step 2: Convert to fraction form
   257,511,788.72/355,361,341.56 = 141,618,284.72/x
3. Step 3: Cross multiply
   257,511,788.72x = 355,361,341.56 × 141,618,284.72
4. Step 4: Simplify right side
   257,511,788.72x = 50,325,663,647,525,248
5. Step 5: Solve for x
   x = 50,325,663,647,525,248/257,511,788.72
6. Step 6: Final answer
   x = 195,430,523.39