Finding the Fourth Proportional to 118,929.75, 164,128.04 and 65,216.84

Step by Step Solution

1. Step 1: Write the proportion equation
   118,929.75 : 164,128.04 = 65,216.84 : x
2. Step 2: Convert to fraction form
   118,929.75/164,128.04 = 65,216.84/x
3. Step 3: Cross multiply
   118,929.75x = 164,128.04 × 65,216.84
4. Step 4: Simplify right side
   118,929.75x = 10,703,910,977.47
5. Step 5: Solve for x
   x = 10,703,910,977.47/118,929.75
6. Step 6: Final answer
   x = 90,001.96