Finding the Fourth Proportional to 1,556,312,456,342.10, 2,147,778,701,464.50 and 861,853,014,148.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556,312,456,342.10 : 2,147,778,701,464.50 = 861,853,014,148.10 : x
2. Step 2: Convert to fraction form
   1,556,312,456,342.10/2,147,778,701,464.50 = 861,853,014,148.10/x
3. Step 3: Cross multiply
   1,556,312,456,342.10x = 2,147,778,701,464.50 × 861,853,014,148.10
4. Step 4: Simplify right side
   1,556,312,456,342.10x = 1,851,069,547,580,271,540,305,920
5. Step 5: Solve for x
   x = 1,851,069,547,580,271,540,305,920/1,556,312,456,342.10
6. Step 6: Final answer
   x = 1,189,394,546,086.82