Finding the Fourth Proportional to 123,945.99, 185,912.46 and 72,683.16

Step by Step Solution

1. Step 1: Write the proportion equation
   123,945.99 : 185,912.46 = 72,683.16 : x
2. Step 2: Convert to fraction form
   123,945.99/185,912.46 = 72,683.16/x
3. Step 3: Cross multiply
   123,945.99x = 185,912.46 × 72,683.16
4. Step 4: Simplify right side
   123,945.99x = 13,512,705,076.17
5. Step 5: Solve for x
   x = 13,512,705,076.17/123,945.99
6. Step 6: Final answer
   x = 109,020.91