Finding the Fourth Proportional to 116,799.49, 161,181.39 and 65,814.40

Step by Step Solution

1. Step 1: Write the proportion equation
   116,799.49 : 161,181.39 = 65,814.40 : x
2. Step 2: Convert to fraction form
   116,799.49/161,181.39 = 65,814.40/x
3. Step 3: Cross multiply
   116,799.49x = 161,181.39 × 65,814.40
4. Step 4: Simplify right side
   116,799.49x = 10,608,056,474.02
5. Step 5: Solve for x
   x = 10,608,056,474.02/116,799.49
6. Step 6: Final answer
   x = 90,822.80