Finding the Fourth Proportional to 1,136,636,426.88, 1,568,557,638.72 and 641,603,410.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136,636,426.88 : 1,568,557,638.72 = 641,603,410.56 : x
2. Step 2: Convert to fraction form
   1,136,636,426.88/1,568,557,638.72 = 641,603,410.56/x
3. Step 3: Cross multiply
   1,136,636,426.88x = 1,568,557,638.72 × 641,603,410.56
4. Step 4: Simplify right side
   1,136,636,426.88x = 1,006,391,930,662,692,224
5. Step 5: Solve for x
   x = 1,006,391,930,662,692,224/1,136,636,426.88
6. Step 6: Final answer
   x = 885,412,350.74