Finding the Fourth Proportional to 118,327.59, 163,298.72 and 64,617.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,327.59 : 163,298.72 = 64,617.60 : x
2. Step 2: Convert to fraction form
   118,327.59/163,298.72 = 64,617.60/x
3. Step 3: Cross multiply
   118,327.59x = 163,298.72 × 64,617.60
4. Step 4: Simplify right side
   118,327.59x = 10,551,971,046.38
5. Step 5: Solve for x
   x = 10,551,971,046.38/118,327.59
6. Step 6: Final answer
   x = 89,175.91