Finding the Fourth Proportional to 101,017.36, 139,398.42 and 55,695.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,017.36 : 139,398.42 = 55,695.28 : x
2. Step 2: Convert to fraction form
   101,017.36/139,398.42 = 55,695.28/x
3. Step 3: Cross multiply
   101,017.36x = 139,398.42 × 55,695.28
4. Step 4: Simplify right side
   101,017.36x = 7,763,834,033.46
5. Step 5: Solve for x
   x = 7,763,834,033.46/101,017.36
6. Step 6: Final answer
   x = 76,856.43