Finding the Fourth Proportional to 118,391.82, 163,383.12 and 64,680.32

Step by Step Solution

1. Step 1: Write the proportion equation
   118,391.82 : 163,383.12 = 64,680.32 : x
2. Step 2: Convert to fraction form
   118,391.82/163,383.12 = 64,680.32/x
3. Step 3: Cross multiply
   118,391.82x = 163,383.12 × 64,680.32
4. Step 4: Simplify right side
   118,391.82x = 10,567,671,667.28
5. Step 5: Solve for x
   x = 10,567,671,667.28/118,391.82
6. Step 6: Final answer
   x = 89,260.15