Finding the Fourth Proportional to 2,791,298,278.32, 3,851,992,424.56 and 1,521,139,618.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,791,298,278.32 : 3,851,992,424.56 = 1,521,139,618.36 : x
2. Step 2: Convert to fraction form
   2,791,298,278.32/3,851,992,424.56 = 1,521,139,618.36/x
3. Step 3: Cross multiply
   2,791,298,278.32x = 3,851,992,424.56 × 1,521,139,618.36
4. Step 4: Simplify right side
   2,791,298,278.32x = 5,859,418,286,620,809,216
5. Step 5: Solve for x
   x = 5,859,418,286,620,809,216/2,791,298,278.32
6. Step 6: Final answer
   x = 2,099,173,109.56