Finding the Fourth Proportional to 199,810.28, 275,817.06 and 123,360.27

Step by Step Solution

1. Step 1: Write the proportion equation
   199,810.28 : 275,817.06 = 123,360.27 : x
2. Step 2: Convert to fraction form
   199,810.28/275,817.06 = 123,360.27/x
3. Step 3: Cross multiply
   199,810.28x = 275,817.06 × 123,360.27
4. Step 4: Simplify right side
   199,810.28x = 34,024,868,026.52
5. Step 5: Solve for x
   x = 34,024,868,026.52/199,810.28
6. Step 6: Final answer
   x = 170,285.88