Finding the Fourth Proportional to 228,629,308.12, 315,510,662.18 and 124,208,128.15

Step by Step Solution

1. Step 1: Write the proportion equation
   228,629,308.12 : 315,510,662.18 = 124,208,128.15 : x
2. Step 2: Convert to fraction form
   228,629,308.12/315,510,662.18 = 124,208,128.15/x
3. Step 3: Cross multiply
   228,629,308.12x = 315,510,662.18 × 124,208,128.15
4. Step 4: Simplify right side
   228,629,308.12x = 39,188,988,760,123,760
5. Step 5: Solve for x
   x = 39,188,988,760,123,760/228,629,308.12
6. Step 6: Final answer
   x = 171,408,421.27