Finding the Fourth Proportional to 208,514.18, 287,742.57 and 123,580.82

Step by Step Solution

1. Step 1: Write the proportion equation
   208,514.18 : 287,742.57 = 123,580.82 : x
2. Step 2: Convert to fraction form
   208,514.18/287,742.57 = 123,580.82/x
3. Step 3: Cross multiply
   208,514.18x = 287,742.57 × 123,580.82
4. Step 4: Simplify right side
   208,514.18x = 35,559,462,749.51
5. Step 5: Solve for x
   x = 35,559,462,749.51/208,514.18
6. Step 6: Final answer
   x = 170,537.38