Finding the Fourth Proportional to 91,417.55, 126,162.81 and 51,144.28

Step by Step Solution

1. Step 1: Write the proportion equation
   91,417.55 : 126,162.81 = 51,144.28 : x
2. Step 2: Convert to fraction form
   91,417.55/126,162.81 = 51,144.28/x
3. Step 3: Cross multiply
   91,417.55x = 126,162.81 × 51,144.28
4. Step 4: Simplify right side
   91,417.55x = 6,452,505,764.82
5. Step 5: Solve for x
   x = 6,452,505,764.82/91,417.55
6. Step 6: Final answer
   x = 70,582.79