Finding the Fourth Proportional to 12,978,447,370.80, 19,467,458,315.61 and 4,135,166,093.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,978,447,370.80 : 19,467,458,315.61 = 4,135,166,093.94 : x
2. Step 2: Convert to fraction form
   12,978,447,370.80/19,467,458,315.61 = 4,135,166,093.94/x
3. Step 3: Cross multiply
   12,978,447,370.80x = 19,467,458,315.61 × 4,135,166,093.94
4. Step 4: Simplify right side
   12,978,447,370.80x = 80,501,173,561,900,777,472
5. Step 5: Solve for x
   x = 80,501,173,561,900,777,472/12,978,447,370.80
6. Step 6: Final answer
   x = 6,202,681,357.94