Finding the Fourth Proportional to 123,045.56, 169,804.46 and 72,744.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,045.56 : 169,804.46 = 72,744.12 : x
2. Step 2: Convert to fraction form
   123,045.56/169,804.46 = 72,744.12/x
3. Step 3: Cross multiply
   123,045.56x = 169,804.46 × 72,744.12
4. Step 4: Simplify right side
   123,045.56x = 12,352,276,014.78
5. Step 5: Solve for x
   x = 12,352,276,014.78/123,045.56
6. Step 6: Final answer
   x = 100,387.82