Finding the Fourth Proportional to 101,019.06, 139,404.61 and 55,701.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,019.06 : 139,404.61 = 55,701.28 : x
2. Step 2: Convert to fraction form
   101,019.06/139,404.61 = 55,701.28/x
3. Step 3: Cross multiply
   101,019.06x = 139,404.61 × 55,701.28
4. Step 4: Simplify right side
   101,019.06x = 7,765,015,458.78
5. Step 5: Solve for x
   x = 7,765,015,458.78/101,019.06
6. Step 6: Final answer
   x = 76,866.84