Finding the Fourth Proportional to 116,966.93, 161,414.19 and 65,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,966.93 : 161,414.19 = 65,979.50 : x
2. Step 2: Convert to fraction form
   116,966.93/161,414.19 = 65,979.50/x
3. Step 3: Cross multiply
   116,966.93x = 161,414.19 × 65,979.50
4. Step 4: Simplify right side
   116,966.93x = 10,650,026,742.03
5. Step 5: Solve for x
   x = 10,650,026,742.03/116,966.93
6. Step 6: Final answer
   x = 91,051.61