Finding the Fourth Proportional to 2,551,017,846.12, 3,826,526,818.40 and 612,321,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551,017,846.12 : 3,826,526,818.40 = 612,321,078.12 : x
2. Step 2: Convert to fraction form
   2,551,017,846.12/3,826,526,818.40 = 612,321,078.12/x
3. Step 3: Cross multiply
   2,551,017,846.12x = 3,826,526,818.40 × 612,321,078.12
4. Step 4: Simplify right side
   2,551,017,846.12x = 2,343,063,026,897,781,760
5. Step 5: Solve for x
   x = 2,343,063,026,897,781,760/2,551,017,846.12
6. Step 6: Final answer
   x = 918,481,628.99