Finding the Fourth Proportional to 31,778,139.42, 43,858,299.42 and 18,551,654.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,778,139.42 : 43,858,299.42 = 18,551,654.28 : x
2. Step 2: Convert to fraction form
   31,778,139.42/43,858,299.42 = 18,551,654.28/x
3. Step 3: Cross multiply
   31,778,139.42x = 43,858,299.42 × 18,551,654.28
4. Step 4: Simplify right side
   31,778,139.42x = 813,644,008,148,564.62
5. Step 5: Solve for x
   x = 813,644,008,148,564.62/31,778,139.42
6. Step 6: Final answer
   x = 25,603,890.69