Finding the Fourth Proportional to 123,600.61, 170,581.56 and 75,206.06

Step by Step Solution

1. Step 1: Write the proportion equation
   123,600.61 : 170,581.56 = 75,206.06 : x
2. Step 2: Convert to fraction form
   123,600.61/170,581.56 = 75,206.06/x
3. Step 3: Cross multiply
   123,600.61x = 170,581.56 × 75,206.06
4. Step 4: Simplify right side
   123,600.61x = 12,828,766,946.61
5. Step 5: Solve for x
   x = 12,828,766,946.61/123,600.61
6. Step 6: Final answer
   x = 103,792.10