Finding the Fourth Proportional to 91,709.50, 126,412.83 and 72,296.76

Step by Step Solution

1. Step 1: Write the proportion equation
   91,709.50 : 126,412.83 = 72,296.76 : x
2. Step 2: Convert to fraction form
   91,709.50/126,412.83 = 72,296.76/x
3. Step 3: Cross multiply
   91,709.50x = 126,412.83 × 72,296.76
4. Step 4: Simplify right side
   91,709.50x = 9,139,238,031.43
5. Step 5: Solve for x
   x = 9,139,238,031.43/91,709.50
6. Step 6: Final answer
   x = 99,654.21