Finding the Fourth Proportional to 118,902.64, 164,085.59 and 65,186.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,902.64 : 164,085.59 = 65,186.50 : x
2. Step 2: Convert to fraction form
   118,902.64/164,085.59 = 65,186.50/x
3. Step 3: Cross multiply
   118,902.64x = 164,085.59 × 65,186.50
4. Step 4: Simplify right side
   118,902.64x = 10,696,165,312.54
5. Step 5: Solve for x
   x = 10,696,165,312.54/118,902.64
6. Step 6: Final answer
   x = 89,957.34