Finding the Fourth Proportional to 2,585,824,669.89, 3,878,737,056.09 and 620,677,748.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585,824,669.89 : 3,878,737,056.09 = 620,677,748.43 : x
2. Step 2: Convert to fraction form
   2,585,824,669.89/3,878,737,056.09 = 620,677,748.43/x
3. Step 3: Cross multiply
   2,585,824,669.89x = 3,878,737,056.09 × 620,677,748.43
4. Step 4: Simplify right side
   2,585,824,669.89x = 2,407,445,782,725,947,904
5. Step 5: Solve for x
   x = 2,407,445,782,725,947,904/2,585,824,669.89
6. Step 6: Final answer
   x = 931,016,634.95