Finding the Fourth Proportional to 188,003.72, 259,478.31 and 111,564.97

Step by Step Solution

1. Step 1: Write the proportion equation
   188,003.72 : 259,478.31 = 111,564.97 : x
2. Step 2: Convert to fraction form
   188,003.72/259,478.31 = 111,564.97/x
3. Step 3: Cross multiply
   188,003.72x = 259,478.31 × 111,564.97
4. Step 4: Simplify right side
   188,003.72x = 28,948,689,222.10
5. Step 5: Solve for x
   x = 28,948,689,222.10/188,003.72
6. Step 6: Final answer
   x = 153,979.34