Finding the Fourth Proportional to 123,953.72, 171,057.36 and 73,643

Step by Step Solution

1. Step 1: Write the proportion equation
   123,953.72 : 171,057.36 = 73,643 : x
2. Step 2: Convert to fraction form
   123,953.72/171,057.36 = 73,643/x
3. Step 3: Cross multiply
   123,953.72x = 171,057.36 × 73,643
4. Step 4: Simplify right side
   123,953.72x = 12,597,177,162.48
5. Step 5: Solve for x
   x = 12,597,177,162.48/123,953.72
6. Step 6: Final answer
   x = 101,628.07