Finding the Fourth Proportional to 306,487,018.72, 422,951,974.61 and 167,257,780.49

Step by Step Solution

1. Step 1: Write the proportion equation
   306,487,018.72 : 422,951,974.61 = 167,257,780.49 : x
2. Step 2: Convert to fraction form
   306,487,018.72/422,951,974.61 = 167,257,780.49/x
3. Step 3: Cross multiply
   306,487,018.72x = 422,951,974.61 × 167,257,780.49
4. Step 4: Simplify right side
   306,487,018.72x = 70,742,008,525,016,680
5. Step 5: Solve for x
   x = 70,742,008,525,016,680/306,487,018.72
6. Step 6: Final answer
   x = 230,815,676.37