Finding the Fourth Proportional to 353,986,688.88, 488,499,885.72 and 205,337,873.52

Step by Step Solution

1. Step 1: Write the proportion equation
   353,986,688.88 : 488,499,885.72 = 205,337,873.52 : x
2. Step 2: Convert to fraction form
   353,986,688.88/488,499,885.72 = 205,337,873.52/x
3. Step 3: Cross multiply
   353,986,688.88x = 488,499,885.72 × 205,337,873.52
4. Step 4: Simplify right side
   353,986,688.88x = 100,307,527,748,507,824
5. Step 5: Solve for x
   x = 100,307,527,748,507,824/353,986,688.88
6. Step 6: Final answer
   x = 283,365,253.27