Finding the Fourth Proportional to 101,040.14, 139,436.35 and 55,719.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,040.14 : 139,436.35 = 55,719.72 : x
2. Step 2: Convert to fraction form
   101,040.14/139,436.35 = 55,719.72/x
3. Step 3: Cross multiply
   101,040.14x = 139,436.35 × 55,719.72
4. Step 4: Simplify right side
   101,040.14x = 7,769,354,240.52
5. Step 5: Solve for x
   x = 7,769,354,240.52/101,040.14
6. Step 6: Final answer
   x = 76,893.74