Finding the Fourth Proportional to 123,266.72, 170,054.05 and 72,253.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,266.72 : 170,054.05 = 72,253.59 : x
2. Step 2: Convert to fraction form
   123,266.72/170,054.05 = 72,253.59/x
3. Step 3: Cross multiply
   123,266.72x = 170,054.05 × 72,253.59
4. Step 4: Simplify right side
   123,266.72x = 12,287,015,606.54
5. Step 5: Solve for x
   x = 12,287,015,606.54/123,266.72
6. Step 6: Final answer
   x = 99,678.29