Finding the Fourth Proportional to 118,540.31, 163,585.62 and 64,825.37

Step by Step Solution

1. Step 1: Write the proportion equation
   118,540.31 : 163,585.62 = 64,825.37 : x
2. Step 2: Convert to fraction form
   118,540.31/163,585.62 = 64,825.37/x
3. Step 3: Cross multiply
   118,540.31x = 163,585.62 × 64,825.37
4. Step 4: Simplify right side
   118,540.31x = 10,604,497,525.25
5. Step 5: Solve for x
   x = 10,604,497,525.25/118,540.31
6. Step 6: Final answer
   x = 89,459.00