Finding the Fourth Proportional to 123,270.66, 170,114.31 and 72,271.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,270.66 : 170,114.31 = 72,271.98 : x
2. Step 2: Convert to fraction form
   123,270.66/170,114.31 = 72,271.98/x
3. Step 3: Cross multiply
   123,270.66x = 170,114.31 × 72,271.98
4. Step 4: Simplify right side
   123,270.66x = 12,294,498,010.03
5. Step 5: Solve for x
   x = 12,294,498,010.03/123,270.66
6. Step 6: Final answer
   x = 99,735.80