Finding the Fourth Proportional to 116,861.34, 161,301.72 and 69,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   116,861.34 : 161,301.72 = 69,131.28 : x
2. Step 2: Convert to fraction form
   116,861.34/161,301.72 = 69,131.28/x
3. Step 3: Cross multiply
   116,861.34x = 161,301.72 × 69,131.28
4. Step 4: Simplify right side
   116,861.34x = 11,150,994,369.80
5. Step 5: Solve for x
   x = 11,150,994,369.80/116,861.34
6. Step 6: Final answer
   x = 95,420.73