Finding the Fourth Proportional to 4,138,353,746.38, 5,718,398,521.31 and 2,946,854,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,138,353,746.38 : 5,718,398,521.31 = 2,946,854,139.72 : x
2. Step 2: Convert to fraction form
   4,138,353,746.38/5,718,398,521.31 = 2,946,854,139.72/x
3. Step 3: Cross multiply
   4,138,353,746.38x = 5,718,398,521.31 × 2,946,854,139.72
4. Step 4: Simplify right side
   4,138,353,746.38x = 16,851,286,355,091,099,648
5. Step 5: Solve for x
   x = 16,851,286,355,091,099,648/4,138,353,746.38
6. Step 6: Final answer
   x = 4,071,978,228.02