Finding the Fourth Proportional to 120,231,123.18, 165,919,271.55 and 65,226,979.68

Step by Step Solution

1. Step 1: Write the proportion equation
   120,231,123.18 : 165,919,271.55 = 65,226,979.68 : x
2. Step 2: Convert to fraction form
   120,231,123.18/165,919,271.55 = 65,226,979.68/x
3. Step 3: Cross multiply
   120,231,123.18x = 165,919,271.55 × 65,226,979.68
4. Step 4: Simplify right side
   120,231,123.18x = 10,822,412,953,912,252
5. Step 5: Solve for x
   x = 10,822,412,953,912,252/120,231,123.18
6. Step 6: Final answer
   x = 90,013,406.41