Finding the Fourth Proportional to 1,521,061,613.49, 2,099,077,351.29 and 842,889,892.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,061,613.49 : 2,099,077,351.29 = 842,889,892.51 : x
2. Step 2: Convert to fraction form
   1,521,061,613.49/2,099,077,351.29 = 842,889,892.51/x
3. Step 3: Cross multiply
   1,521,061,613.49x = 2,099,077,351.29 × 842,889,892.51
4. Step 4: Simplify right side
   1,521,061,613.49x = 1,769,291,082,999,408,640
5. Step 5: Solve for x
   x = 1,769,291,082,999,408,640/1,521,061,613.49
6. Step 6: Final answer
   x = 1,163,194,881.33