Finding the Fourth Proportional to 181,668.72, 272,109.24 and 87,978

Step by Step Solution

1. Step 1: Write the proportion equation
   181,668.72 : 272,109.24 = 87,978 : x
2. Step 2: Convert to fraction form
   181,668.72/272,109.24 = 87,978/x
3. Step 3: Cross multiply
   181,668.72x = 272,109.24 × 87,978
4. Step 4: Simplify right side
   181,668.72x = 23,939,626,716.72
5. Step 5: Solve for x
   x = 23,939,626,716.72/181,668.72
6. Step 6: Final answer
   x = 131,776.27