Finding the Fourth Proportional to 78,731.46, 108,649.76 and 50,453.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,731.46 : 108,649.76 = 50,453.55 : x
2. Step 2: Convert to fraction form
   78,731.46/108,649.76 = 50,453.55/x
3. Step 3: Cross multiply
   78,731.46x = 108,649.76 × 50,453.55
4. Step 4: Simplify right side
   78,731.46x = 5,481,765,846.38
5. Step 5: Solve for x
   x = 5,481,765,846.38/78,731.46
6. Step 6: Final answer
   x = 69,626.12