Finding the Fourth Proportional to 123,155.25, 169,955.73 and 74,743.17

Step by Step Solution

1. Step 1: Write the proportion equation
   123,155.25 : 169,955.73 = 74,743.17 : x
2. Step 2: Convert to fraction form
   123,155.25/169,955.73 = 74,743.17/x
3. Step 3: Cross multiply
   123,155.25x = 169,955.73 × 74,743.17
4. Step 4: Simplify right side
   123,155.25x = 12,703,030,019.86
5. Step 5: Solve for x
   x = 12,703,030,019.86/123,155.25
6. Step 6: Final answer
   x = 103,146.48