Finding the Fourth Proportional to 123,554.07, 170,377.23 and 105,708.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,554.07 : 170,377.23 = 105,708.15 : x
2. Step 2: Convert to fraction form
   123,554.07/170,377.23 = 105,708.15/x
3. Step 3: Cross multiply
   123,554.07x = 170,377.23 × 105,708.15
4. Step 4: Simplify right side
   123,554.07x = 18,010,261,785.42
5. Step 5: Solve for x
   x = 18,010,261,785.42/123,554.07
6. Step 6: Final answer
   x = 145,768.26