Finding the Fourth Proportional to 1,618,635,005.52, 2,427,958,806.84 and 391,801,488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618,635,005.52 : 2,427,958,806.84 = 391,801,488.72 : x
2. Step 2: Convert to fraction form
   1,618,635,005.52/2,427,958,806.84 = 391,801,488.72/x
3. Step 3: Cross multiply
   1,618,635,005.52x = 2,427,958,806.84 × 391,801,488.72
4. Step 4: Simplify right side
   1,618,635,005.52x = 951,277,875,070,747,008
5. Step 5: Solve for x
   x = 951,277,875,070,747,008/1,618,635,005.52
6. Step 6: Final answer
   x = 587,703,757.69