Finding the Fourth Proportional to 118,456.56, 163,458.81 and 64,738.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,456.56 : 163,458.81 = 64,738.17 : x
2. Step 2: Convert to fraction form
   118,456.56/163,458.81 = 64,738.17/x
3. Step 3: Cross multiply
   118,456.56x = 163,458.81 × 64,738.17
4. Step 4: Simplify right side
   118,456.56x = 10,582,024,229.78
5. Step 5: Solve for x
   x = 10,582,024,229.78/118,456.56
6. Step 6: Final answer
   x = 89,332.53