Finding the Fourth Proportional to 118,327.72, 163,292.54 and 64,613.16

Step by Step Solution

1. Step 1: Write the proportion equation
   118,327.72 : 163,292.54 = 64,613.16 : x
2. Step 2: Convert to fraction form
   118,327.72/163,292.54 = 64,613.16/x
3. Step 3: Cross multiply
   118,327.72x = 163,292.54 × 64,613.16
4. Step 4: Simplify right side
   118,327.72x = 10,550,847,013.83
5. Step 5: Solve for x
   x = 10,550,847,013.83/118,327.72
6. Step 6: Final answer
   x = 89,166.32