Finding the Fourth Proportional to 118,945.07, 164,129.10 and 65,215.94

Step by Step Solution

1. Step 1: Write the proportion equation
   118,945.07 : 164,129.10 = 65,215.94 : x
2. Step 2: Convert to fraction form
   118,945.07/164,129.10 = 65,215.94/x
3. Step 3: Cross multiply
   118,945.07x = 164,129.10 × 65,215.94
4. Step 4: Simplify right side
   118,945.07x = 10,703,833,537.85
5. Step 5: Solve for x
   x = 10,703,833,537.85/118,945.07
6. Step 6: Final answer
   x = 89,989.72