Finding the Fourth Proportional to 91,499.31, 126,240.25 and 51,206.67

Step by Step Solution

1. Step 1: Write the proportion equation
   91,499.31 : 126,240.25 = 51,206.67 : x
2. Step 2: Convert to fraction form
   91,499.31/126,240.25 = 51,206.67/x
3. Step 3: Cross multiply
   91,499.31x = 126,240.25 × 51,206.67
4. Step 4: Simplify right side
   91,499.31x = 6,464,342,822.47
5. Step 5: Solve for x
   x = 6,464,342,822.47/91,499.31
6. Step 6: Final answer
   x = 70,649.09