Finding the Fourth Proportional to 4,980,948,578.42, 7,471,437,051.45 and 1,439,978,276.59

Step by Step Solution

1. Step 1: Write the proportion equation
   4,980,948,578.42 : 7,471,437,051.45 = 1,439,978,276.59 : x
2. Step 2: Convert to fraction form
   4,980,948,578.42/7,471,437,051.45 = 1,439,978,276.59/x
3. Step 3: Cross multiply
   4,980,948,578.42x = 7,471,437,051.45 × 1,439,978,276.59
4. Step 4: Simplify right side
   4,980,948,578.42x = 10,758,707,048,960,284,672
5. Step 5: Solve for x
   x = 10,758,707,048,960,284,672/4,980,948,578.42
6. Step 6: Final answer
   x = 2,159,971,515.38