Finding the Fourth Proportional to 101,171.38, 139,609.34 and 55,842.09

Step by Step Solution

1. Step 1: Write the proportion equation
   101,171.38 : 139,609.34 = 55,842.09 : x
2. Step 2: Convert to fraction form
   101,171.38/139,609.34 = 55,842.09/x
3. Step 3: Cross multiply
   101,171.38x = 139,609.34 × 55,842.09
4. Step 4: Simplify right side
   101,171.38x = 7,796,076,351.86
5. Step 5: Solve for x
   x = 7,796,076,351.86/101,171.38
6. Step 6: Final answer
   x = 77,058.12