Finding the Fourth Proportional to 118,902.54, 164,085.46 and 65,186.40

Step by Step Solution

1. Step 1: Write the proportion equation
   118,902.54 : 164,085.46 = 65,186.40 : x
2. Step 2: Convert to fraction form
   118,902.54/164,085.46 = 65,186.40/x
3. Step 3: Cross multiply
   118,902.54x = 164,085.46 × 65,186.40
4. Step 4: Simplify right side
   118,902.54x = 10,696,140,787.28
5. Step 5: Solve for x
   x = 10,696,140,787.28/118,902.54
6. Step 6: Final answer
   x = 89,957.21