Finding the Fourth Proportional to 118,909.29, 164,090.43 and 65,193.12

Step by Step Solution

1. Step 1: Write the proportion equation
   118,909.29 : 164,090.43 = 65,193.12 : x
2. Step 2: Convert to fraction form
   118,909.29/164,090.43 = 65,193.12/x
3. Step 3: Cross multiply
   118,909.29x = 164,090.43 × 65,193.12
4. Step 4: Simplify right side
   118,909.29x = 10,697,567,093.84
5. Step 5: Solve for x
   x = 10,697,567,093.84/118,909.29
6. Step 6: Final answer
   x = 89,964.10