Finding the Fourth Proportional to 116,964.08, 161,402.04 and 65,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   116,964.08 : 161,402.04 = 65,978.48 : x
2. Step 2: Convert to fraction form
   116,964.08/161,402.04 = 65,978.48/x
3. Step 3: Cross multiply
   116,964.08x = 161,402.04 × 65,978.48
4. Step 4: Simplify right side
   116,964.08x = 10,649,061,268.10
5. Step 5: Solve for x
   x = 10,649,061,268.10/116,964.08
6. Step 6: Final answer
   x = 91,045.57