Finding the Fourth Proportional to 50,485,647.73, 69,658,327.79 and 30,638,973.21

Step by Step Solution

1. Step 1: Write the proportion equation
   50,485,647.73 : 69,658,327.79 = 30,638,973.21 : x
2. Step 2: Convert to fraction form
   50,485,647.73/69,658,327.79 = 30,638,973.21/x
3. Step 3: Cross multiply
   50,485,647.73x = 69,658,327.79 × 30,638,973.21
4. Step 4: Simplify right side
   50,485,647.73x = 2,134,259,639,011,208.75
5. Step 5: Solve for x
   x = 2,134,259,639,011,208.75/50,485,647.73
6. Step 6: Final answer
   x = 42,274,581.69