Finding the Fourth Proportional to 1,099,850,434.72, 1,517,422,162.54 and 623,489,733.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099,850,434.72 : 1,517,422,162.54 = 623,489,733.20 : x
2. Step 2: Convert to fraction form
   1,099,850,434.72/1,517,422,162.54 = 623,489,733.20/x
3. Step 3: Cross multiply
   1,099,850,434.72x = 1,517,422,162.54 × 623,489,733.20
4. Step 4: Simplify right side
   1,099,850,434.72x = 946,097,139,273,831,680
5. Step 5: Solve for x
   x = 946,097,139,273,831,680/1,099,850,434.72
6. Step 6: Final answer
   x = 860,205,269.20