Finding the Fourth Proportional to 318,930,633.30, 446,805,217.50 and 318,930,633.30

Step by Step Solution

1. Step 1: Write the proportion equation
   318,930,633.30 : 446,805,217.50 = 318,930,633.30 : x
2. Step 2: Convert to fraction form
   318,930,633.30/446,805,217.50 = 318,930,633.30/x
3. Step 3: Cross multiply
   318,930,633.30x = 446,805,217.50 × 318,930,633.30
4. Step 4: Simplify right side
   318,930,633.30x = 142,499,870,979,019,248
5. Step 5: Solve for x
   x = 142,499,870,979,019,248/318,930,633.30
6. Step 6: Final answer
   x = 446,805,217.50