Finding the Fourth Proportional to 699,235,499.43, 964,944,843.72 and 385,969,630.38

Step by Step Solution

1. Step 1: Write the proportion equation
   699,235,499.43 : 964,944,843.72 = 385,969,630.38 : x
2. Step 2: Convert to fraction form
   699,235,499.43/964,944,843.72 = 385,969,630.38/x
3. Step 3: Cross multiply
   699,235,499.43x = 964,944,843.72 × 385,969,630.38
4. Step 4: Simplify right side
   699,235,499.43x = 372,439,404,667,695,296
5. Step 5: Solve for x
   x = 372,439,404,667,695,296/699,235,499.43
6. Step 6: Final answer
   x = 532,638,009.61