Finding the Fourth Proportional to 118,799.25, 163,942.95 and 65,086.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,799.25 : 163,942.95 = 65,086.17 : x
2. Step 2: Convert to fraction form
   118,799.25/163,942.95 = 65,086.17/x
3. Step 3: Cross multiply
   118,799.25x = 163,942.95 × 65,086.17
4. Step 4: Simplify right side
   118,799.25x = 10,670,418,714.00
5. Step 5: Solve for x
   x = 10,670,418,714.00/118,799.25
6. Step 6: Final answer
   x = 89,818.91