Finding the Fourth Proportional to 118,906.81, 164,087.84 and 65,189.99

Step by Step Solution

1. Step 1: Write the proportion equation
   118,906.81 : 164,087.84 = 65,189.99 : x
2. Step 2: Convert to fraction form
   118,906.81/164,087.84 = 65,189.99/x
3. Step 3: Cross multiply
   118,906.81x = 164,087.84 × 65,189.99
4. Step 4: Simplify right side
   118,906.81x = 10,696,884,648.72
5. Step 5: Solve for x
   x = 10,696,884,648.72/118,906.81
6. Step 6: Final answer
   x = 89,960.24