Finding the Fourth Proportional to 118,921.35, 164,113.05 and 65,206.23

Step by Step Solution

1. Step 1: Write the proportion equation
   118,921.35 : 164,113.05 = 65,206.23 : x
2. Step 2: Convert to fraction form
   118,921.35/164,113.05 = 65,206.23/x
3. Step 3: Cross multiply
   118,921.35x = 164,113.05 × 65,206.23
4. Step 4: Simplify right side
   118,921.35x = 10,701,193,284.30
5. Step 5: Solve for x
   x = 10,701,193,284.30/118,921.35
6. Step 6: Final answer
   x = 89,985.47