Finding the Fourth Proportional to 2,189,137,265.88, 3,020,972,088.78 and 1,185,546,678.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189,137,265.88 : 3,020,972,088.78 = 1,185,546,678.42 : x
2. Step 2: Convert to fraction form
   2,189,137,265.88/3,020,972,088.78 = 1,185,546,678.42/x
3. Step 3: Cross multiply
   2,189,137,265.88x = 3,020,972,088.78 × 1,185,546,678.42
4. Step 4: Simplify right side
   2,189,137,265.88x = 3,581,503,425,452,658,688
5. Step 5: Solve for x
   x = 3,581,503,425,452,658,688/2,189,137,265.88
6. Step 6: Final answer
   x = 1,636,034,195.42