Finding the Fourth Proportional to 91,906.96, 126,843.50 and 51,620.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,906.96 : 126,843.50 = 51,620.72 : x
2. Step 2: Convert to fraction form
   91,906.96/126,843.50 = 51,620.72/x
3. Step 3: Cross multiply
   91,906.96x = 126,843.50 × 51,620.72
4. Step 4: Simplify right side
   91,906.96x = 6,547,752,668.27
5. Step 5: Solve for x
   x = 6,547,752,668.27/91,906.96
6. Step 6: Final answer
   x = 71,243.28