Finding the Fourth Proportional to 51,892,147.91, 71,612,658.83 and 28,688,769.54

Step by Step Solution

1. Step 1: Write the proportion equation
   51,892,147.91 : 71,612,658.83 = 28,688,769.54 : x
2. Step 2: Convert to fraction form
   51,892,147.91/71,612,658.83 = 28,688,769.54/x
3. Step 3: Cross multiply
   51,892,147.91x = 71,612,658.83 × 28,688,769.54
4. Step 4: Simplify right side
   51,892,147.91x = 2,054,479,065,177,072.25
5. Step 5: Solve for x
   x = 2,054,479,065,177,072.25/51,892,147.91
6. Step 6: Final answer
   x = 39,591,328.32