Finding the Fourth Proportional to 101,017.85, 139,410.89 and 55,695.75

Step by Step Solution

1. Step 1: Write the proportion equation
   101,017.85 : 139,410.89 = 55,695.75 : x
2. Step 2: Convert to fraction form
   101,017.85/139,410.89 = 55,695.75/x
3. Step 3: Cross multiply
   101,017.85x = 139,410.89 × 55,695.75
4. Step 4: Simplify right side
   101,017.85x = 7,764,593,484.31
5. Step 5: Solve for x
   x = 7,764,593,484.31/101,017.85
6. Step 6: Final answer
   x = 76,863.58