Finding the Fourth Proportional to 120,614.49, 166,424.00 and 72,870.48

Step by Step Solution

1. Step 1: Write the proportion equation
   120,614.49 : 166,424.00 = 72,870.48 : x
2. Step 2: Convert to fraction form
   120,614.49/166,424.00 = 72,870.48/x
3. Step 3: Cross multiply
   120,614.49x = 166,424.00 × 72,870.48
4. Step 4: Simplify right side
   120,614.49x = 12,127,396,399.17
5. Step 5: Solve for x
   x = 12,127,396,399.17/120,614.49
6. Step 6: Final answer
   x = 100,546.76