Finding the Fourth Proportional to 101,013.18, 139,395.60 and 55,690.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,013.18 : 139,395.60 = 55,690.10 : x
2. Step 2: Convert to fraction form
   101,013.18/139,395.60 = 55,690.10/x
3. Step 3: Cross multiply
   101,013.18x = 139,395.60 × 55,690.10
4. Step 4: Simplify right side
   101,013.18x = 7,762,954,903.56
5. Step 5: Solve for x
   x = 7,762,954,903.56/101,013.18
6. Step 6: Final answer
   x = 76,850.91