Finding the Fourth Proportional to 208,590.59, 287,749.06 and 131,980.59

Step by Step Solution

1. Step 1: Write the proportion equation
   208,590.59 : 287,749.06 = 131,980.59 : x
2. Step 2: Convert to fraction form
   208,590.59/287,749.06 = 131,980.59/x
3. Step 3: Cross multiply
   208,590.59x = 287,749.06 × 131,980.59
4. Step 4: Simplify right side
   208,590.59x = 37,977,290,380.79
5. Step 5: Solve for x
   x = 37,977,290,380.79/208,590.59
6. Step 6: Final answer
   x = 182,066.17