Finding the Fourth Proportional to 116,928.34, 161,365.80 and 65,249.96

Step by Step Solution

1. Step 1: Write the proportion equation
   116,928.34 : 161,365.80 = 65,249.96 : x
2. Step 2: Convert to fraction form
   116,928.34/161,365.80 = 65,249.96/x
3. Step 3: Cross multiply
   116,928.34x = 161,365.80 × 65,249.96
4. Step 4: Simplify right side
   116,928.34x = 10,529,111,433.23
5. Step 5: Solve for x
   x = 10,529,111,433.23/116,928.34
6. Step 6: Final answer
   x = 90,047.56