Finding the Fourth Proportional to 72,724,789.28, 100,362,338.72 and 39,687,167.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,724,789.28 : 100,362,338.72 = 39,687,167.24 : x
2. Step 2: Convert to fraction form
   72,724,789.28/100,362,338.72 = 39,687,167.24/x
3. Step 3: Cross multiply
   72,724,789.28x = 100,362,338.72 × 39,687,167.24
4. Step 4: Simplify right side
   72,724,789.28x = 3,983,096,921,378,167.50
5. Step 5: Solve for x
   x = 3,983,096,921,378,167.50/72,724,789.28
6. Step 6: Final answer
   x = 54,769,452.90