Finding the Fourth Proportional to 118,300.64, 163,258.27 and 64,589.06

Step by Step Solution

1. Step 1: Write the proportion equation
   118,300.64 : 163,258.27 = 64,589.06 : x
2. Step 2: Convert to fraction form
   118,300.64/163,258.27 = 64,589.06/x
3. Step 3: Cross multiply
   118,300.64x = 163,258.27 × 64,589.06
4. Step 4: Simplify right side
   118,300.64x = 10,544,698,443.20
5. Step 5: Solve for x
   x = 10,544,698,443.20/118,300.64
6. Step 6: Final answer
   x = 89,134.76