Finding the Fourth Proportional to 188,020.78, 259,372.04 and 123,480.72

Step by Step Solution

1. Step 1: Write the proportion equation
   188,020.78 : 259,372.04 = 123,480.72 : x
2. Step 2: Convert to fraction form
   188,020.78/259,372.04 = 123,480.72/x
3. Step 3: Cross multiply
   188,020.78x = 259,372.04 × 123,480.72
4. Step 4: Simplify right side
   188,020.78x = 32,027,445,629.67
5. Step 5: Solve for x
   x = 32,027,445,629.67/188,020.78
6. Step 6: Final answer
   x = 170,339.93