Finding the Fourth Proportional to 50,388,586,631.68, 69,538,362,077.40 and 28,978,844,783.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,388,586,631.68 : 69,538,362,077.40 = 28,978,844,783.92 : x
2. Step 2: Convert to fraction form
   50,388,586,631.68/69,538,362,077.40 = 28,978,844,783.92/x
3. Step 3: Cross multiply
   50,388,586,631.68x = 69,538,362,077.40 × 28,978,844,783.92
4. Step 4: Simplify right side
   50,388,586,631.68x = 2,015,141,401,169,003,020,288
5. Step 5: Solve for x
   x = 2,015,141,401,169,003,020,288/50,388,586,631.68
6. Step 6: Final answer
   x = 39,992,020,730.78