Finding the Fourth Proportional to 2,166,907,140.54, 2,990,349,426.42 and 1,176,839,643.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,907,140.54 : 2,990,349,426.42 = 1,176,839,643.42 : x
2. Step 2: Convert to fraction form
   2,166,907,140.54/2,990,349,426.42 = 1,176,839,643.42/x
3. Step 3: Cross multiply
   2,166,907,140.54x = 2,990,349,426.42 × 1,176,839,643.42
4. Step 4: Simplify right side
   2,166,907,140.54x = 3,519,161,752,689,314,816
5. Step 5: Solve for x
   x = 3,519,161,752,689,314,816/2,166,907,140.54
6. Step 6: Final answer
   x = 1,624,048,251.47