Finding the Fourth Proportional to 101,001.56, 139,375.89 and 55,677.20

Step by Step Solution

1. Step 1: Write the proportion equation
   101,001.56 : 139,375.89 = 55,677.20 : x
2. Step 2: Convert to fraction form
   101,001.56/139,375.89 = 55,677.20/x
3. Step 3: Cross multiply
   101,001.56x = 139,375.89 × 55,677.20
4. Step 4: Simplify right side
   101,001.56x = 7,760,058,605.83
5. Step 5: Solve for x
   x = 7,760,058,605.83/101,001.56
6. Step 6: Final answer
   x = 76,831.08