Finding the Fourth Proportional to 20,980,443,868.09, 31,486,985,410.57 and 14,643,706,992.28

Step by Step Solution

1. Step 1: Write the proportion equation
   20,980,443,868.09 : 31,486,985,410.57 = 14,643,706,992.28 : x
2. Step 2: Convert to fraction form
   20,980,443,868.09/31,486,985,410.57 = 14,643,706,992.28/x
3. Step 3: Cross multiply
   20,980,443,868.09x = 31,486,985,410.57 × 14,643,706,992.28
4. Step 4: Simplify right side
   20,980,443,868.09x = 461,086,188,422,533,939,200
5. Step 5: Solve for x
   x = 461,086,188,422,533,939,200/20,980,443,868.09
6. Step 6: Final answer
   x = 21,976,951,075.08