Finding the Fourth Proportional to 116,423.68, 160,662.76 and 64,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,423.68 : 160,662.76 = 64,738.72 : x
2. Step 2: Convert to fraction form
   116,423.68/160,662.76 = 64,738.72/x
3. Step 3: Cross multiply
   116,423.68x = 160,662.76 × 64,738.72
4. Step 4: Simplify right side
   116,423.68x = 10,401,101,434.07
5. Step 5: Solve for x
   x = 10,401,101,434.07/116,423.68
6. Step 6: Final answer
   x = 89,338.37