Finding the Fourth Proportional to 389,066,942.37, 536,925,108.54 and 212,850,849.86

Step by Step Solution

1. Step 1: Write the proportion equation
   389,066,942.37 : 536,925,108.54 = 212,850,849.86 : x
2. Step 2: Convert to fraction form
   389,066,942.37/536,925,108.54 = 212,850,849.86/x
3. Step 3: Cross multiply
   389,066,942.37x = 536,925,108.54 × 212,850,849.86
4. Step 4: Simplify right side
   389,066,942.37x = 114,284,965,663,911,744
5. Step 5: Solve for x
   x = 114,284,965,663,911,744/389,066,942.37
6. Step 6: Final answer
   x = 293,741,136.08