Finding the Fourth Proportional to 116,447.20, 160,679.10 and 65,450.45

Step by Step Solution

1. Step 1: Write the proportion equation
   116,447.20 : 160,679.10 = 65,450.45 : x
2. Step 2: Convert to fraction form
   116,447.20/160,679.10 = 65,450.45/x
3. Step 3: Cross multiply
   116,447.20x = 160,679.10 × 65,450.45
4. Step 4: Simplify right side
   116,447.20x = 10,516,520,047.73
5. Step 5: Solve for x
   x = 10,516,520,047.73/116,447.20
6. Step 6: Final answer
   x = 90,311.49