Finding the Fourth Proportional to 208,047.30, 311,633.55 and 173,055.30

Step by Step Solution

1. Step 1: Write the proportion equation
   208,047.30 : 311,633.55 = 173,055.30 : x
2. Step 2: Convert to fraction form
   208,047.30/311,633.55 = 173,055.30/x
3. Step 3: Cross multiply
   208,047.30x = 311,633.55 × 173,055.30
4. Step 4: Simplify right side
   208,047.30x = 53,929,837,485.32
5. Step 5: Solve for x
   x = 53,929,837,485.32/208,047.30
6. Step 6: Final answer
   x = 259,219.12