Finding the Fourth Proportional to 101,020.02, 139,408.38 and 55,699.62

Step by Step Solution

1. Step 1: Write the proportion equation
   101,020.02 : 139,408.38 = 55,699.62 : x
2. Step 2: Convert to fraction form
   101,020.02/139,408.38 = 55,699.62/x
3. Step 3: Cross multiply
   101,020.02x = 139,408.38 × 55,699.62
4. Step 4: Simplify right side
   101,020.02x = 7,764,993,790.82
5. Step 5: Solve for x
   x = 7,764,993,790.82/101,020.02
6. Step 6: Final answer
   x = 76,865.89