Finding the Fourth Proportional to 116,842.77, 161,238.33 and 65,866.10

Step by Step Solution

1. Step 1: Write the proportion equation
   116,842.77 : 161,238.33 = 65,866.10 : x
2. Step 2: Convert to fraction form
   116,842.77/161,238.33 = 65,866.10/x
3. Step 3: Cross multiply
   116,842.77x = 161,238.33 × 65,866.10
4. Step 4: Simplify right side
   116,842.77x = 10,620,139,161.42
5. Step 5: Solve for x
   x = 10,620,139,161.42/116,842.77
6. Step 6: Final answer
   x = 90,892.57