Finding the Fourth Proportional to 118,920.96, 164,109.72 and 65,205.84

Step by Step Solution

1. Step 1: Write the proportion equation
   118,920.96 : 164,109.72 = 65,205.84 : x
2. Step 2: Convert to fraction form
   118,920.96/164,109.72 = 65,205.84/x
3. Step 3: Cross multiply
   118,920.96x = 164,109.72 × 65,205.84
4. Step 4: Simplify right side
   118,920.96x = 10,700,913,004.70
5. Step 5: Solve for x
   x = 10,700,913,004.70/118,920.96
6. Step 6: Final answer
   x = 89,983.41