Finding the Fourth Proportional to 118,902.65, 164,081.31 and 65,186.49

Step by Step Solution

1. Step 1: Write the proportion equation
   118,902.65 : 164,081.31 = 65,186.49 : x
2. Step 2: Convert to fraction form
   118,902.65/164,081.31 = 65,186.49/x
3. Step 3: Cross multiply
   118,902.65x = 164,081.31 × 65,186.49
4. Step 4: Simplify right side
   118,902.65x = 10,695,884,429.05
5. Step 5: Solve for x
   x = 10,695,884,429.05/118,902.65
6. Step 6: Final answer
   x = 89,954.97