Finding the Fourth Proportional to 118,418.39, 163,412.52 and 64,705.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,418.39 : 163,412.52 = 64,705.25 : x
2. Step 2: Convert to fraction form
   118,418.39/163,412.52 = 64,705.25/x
3. Step 3: Cross multiply
   118,418.39x = 163,412.52 × 64,705.25
4. Step 4: Simplify right side
   118,418.39x = 10,573,647,959.73
5. Step 5: Solve for x
   x = 10,573,647,959.73/118,418.39
6. Step 6: Final answer
   x = 89,290.59