Finding the Fourth Proportional to 118,433.56, 163,436.32 and 64,717.34

Step by Step Solution

1. Step 1: Write the proportion equation
   118,433.56 : 163,436.32 = 64,717.34 : x
2. Step 2: Convert to fraction form
   118,433.56/163,436.32 = 64,717.34/x
3. Step 3: Cross multiply
   118,433.56x = 163,436.32 × 64,717.34
4. Step 4: Simplify right side
   118,433.56x = 10,577,163,889.79
5. Step 5: Solve for x
   x = 10,577,163,889.79/118,433.56
6. Step 6: Final answer
   x = 89,308.84