Finding the Fourth Proportional to 116,756.70, 161,112.61 and 65,768.01

Step by Step Solution

1. Step 1: Write the proportion equation
   116,756.70 : 161,112.61 = 65,768.01 : x
2. Step 2: Convert to fraction form
   116,756.70/161,112.61 = 65,768.01/x
3. Step 3: Cross multiply
   116,756.70x = 161,112.61 × 65,768.01
4. Step 4: Simplify right side
   116,756.70x = 10,596,054,611.20
5. Step 5: Solve for x
   x = 10,596,054,611.20/116,756.70
6. Step 6: Final answer
   x = 90,753.29