Finding the Fourth Proportional to 101,082.56, 139,418.72 and 74,216.64

Step by Step Solution

1. Step 1: Write the proportion equation
   101,082.56 : 139,418.72 = 74,216.64 : x
2. Step 2: Convert to fraction form
   101,082.56/139,418.72 = 74,216.64/x
3. Step 3: Cross multiply
   101,082.56x = 139,418.72 × 74,216.64
4. Step 4: Simplify right side
   101,082.56x = 10,347,188,951.50
5. Step 5: Solve for x
   x = 10,347,188,951.50/101,082.56
6. Step 6: Final answer
   x = 102,363.74