Finding the Fourth Proportional to 118,902.39, 164,085.24 and 65,186.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,902.39 : 164,085.24 = 65,186.25 : x
2. Step 2: Convert to fraction form
   118,902.39/164,085.24 = 65,186.25/x
3. Step 3: Cross multiply
   118,902.39x = 164,085.24 × 65,186.25
4. Step 4: Simplify right side
   118,902.39x = 10,696,101,475.95
5. Step 5: Solve for x
   x = 10,696,101,475.95/118,902.39
6. Step 6: Final answer
   x = 89,956.99