Finding the Fourth Proportional to 118,978, 164,181.96 and 65,251.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,978 : 164,181.96 = 65,251.60 : x
2. Step 2: Convert to fraction form
   118,978/164,181.96 = 65,251.60/x
3. Step 3: Cross multiply
   118,978x = 164,181.96 × 65,251.60
4. Step 4: Simplify right side
   118,978x = 10,713,135,581.14
5. Step 5: Solve for x
   x = 10,713,135,581.14/118,978
6. Step 6: Final answer
   x = 90,043.00