Finding the Fourth Proportional to 116,820.06, 161,210.70 and 65,849.16

Step by Step Solution

1. Step 1: Write the proportion equation
   116,820.06 : 161,210.70 = 65,849.16 : x
2. Step 2: Convert to fraction form
   116,820.06/161,210.70 = 65,849.16/x
3. Step 3: Cross multiply
   116,820.06x = 161,210.70 × 65,849.16
4. Step 4: Simplify right side
   116,820.06x = 10,615,589,178.01
5. Step 5: Solve for x
   x = 10,615,589,178.01/116,820.06
6. Step 6: Final answer
   x = 90,871.29