Finding the Fourth Proportional to 28,470,453.12, 42,706,860.72 and 8,275,695.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,470,453.12 : 42,706,860.72 = 8,275,695.12 : x
2. Step 2: Convert to fraction form
   28,470,453.12/42,706,860.72 = 8,275,695.12/x
3. Step 3: Cross multiply
   28,470,453.12x = 42,706,860.72 × 8,275,695.12
4. Step 4: Simplify right side
   28,470,453.12x = 353,428,958,851,023.69
5. Step 5: Solve for x
   x = 353,428,958,851,023.69/28,470,453.12
6. Step 6: Final answer
   x = 12,413,885.98