Finding the Fourth Proportional to 64,505.92, 96,769.83 and 20,131.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,505.92 : 96,769.83 = 20,131.69 : x
2. Step 2: Convert to fraction form
   64,505.92/96,769.83 = 20,131.69/x
3. Step 3: Cross multiply
   64,505.92x = 96,769.83 × 20,131.69
4. Step 4: Simplify right side
   64,505.92x = 1,948,140,218.91
5. Step 5: Solve for x
   x = 1,948,140,218.91/64,505.92
6. Step 6: Final answer
   x = 30,200.95