Finding the Fourth Proportional to 118,322.59, 163,291.82 and 64,612.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,322.59 : 163,291.82 = 64,612.60 : x
2. Step 2: Convert to fraction form
   118,322.59/163,291.82 = 64,612.60/x
3. Step 3: Cross multiply
   118,322.59x = 163,291.82 × 64,612.60
4. Step 4: Simplify right side
   118,322.59x = 10,550,709,048.93
5. Step 5: Solve for x
   x = 10,550,709,048.93/118,322.59
6. Step 6: Final answer
   x = 89,169.02