Finding the Fourth Proportional to 123,792, 170,854.56 and 73,489.92

Step by Step Solution

1. Step 1: Write the proportion equation
   123,792 : 170,854.56 = 73,489.92 : x
2. Step 2: Convert to fraction form
   123,792/170,854.56 = 73,489.92/x
3. Step 3: Cross multiply
   123,792x = 170,854.56 × 73,489.92
4. Step 4: Simplify right side
   123,792x = 12,556,087,946.04
5. Step 5: Solve for x
   x = 12,556,087,946.04/123,792
6. Step 6: Final answer
   x = 101,428.91