Finding the Fourth Proportional to 9,899,205,978.49, 13,661,263,467.98 and 5,670,935,061.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,899,205,978.49 : 13,661,263,467.98 = 5,670,935,061.37 : x
2. Step 2: Convert to fraction form
   9,899,205,978.49/13,661,263,467.98 = 5,670,935,061.37/x
3. Step 3: Cross multiply
   9,899,205,978.49x = 13,661,263,467.98 × 5,670,935,061.37
4. Step 4: Simplify right side
   9,899,205,978.49x = 77,472,137,983,141,085,184
5. Step 5: Solve for x
   x = 77,472,137,983,141,085,184/9,899,205,978.49
6. Step 6: Final answer
   x = 7,826,096,168.87