Finding the Fourth Proportional to 12,737,704,404.81, 17,578,085,172.47 and 7,021,863,262.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,737,704,404.81 : 17,578,085,172.47 = 7,021,863,262.70 : x
2. Step 2: Convert to fraction form
   12,737,704,404.81/17,578,085,172.47 = 7,021,863,262.70/x
3. Step 3: Cross multiply
   12,737,704,404.81x = 17,578,085,172.47 × 7,021,863,262.70
4. Step 4: Simplify right side
   12,737,704,404.81x = 123,430,910,501,277,089,792
5. Step 5: Solve for x
   x = 123,430,910,501,277,089,792/12,737,704,404.81
6. Step 6: Final answer
   x = 9,690,200,571.36