Finding the Fourth Proportional to 101,085.99, 139,496.39 and 55,768.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,085.99 : 139,496.39 = 55,768.28 : x
2. Step 2: Convert to fraction form
   101,085.99/139,496.39 = 55,768.28/x
3. Step 3: Cross multiply
   101,085.99x = 139,496.39 × 55,768.28
4. Step 4: Simplify right side
   101,085.99x = 7,779,472,760.19
5. Step 5: Solve for x
   x = 7,779,472,760.19/101,085.99
6. Step 6: Final answer
   x = 76,958.96