Finding the Fourth Proportional to 116,012.68, 160,100.76 and 65,711.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,012.68 : 160,100.76 = 65,711.68 : x
2. Step 2: Convert to fraction form
   116,012.68/160,100.76 = 65,711.68/x
3. Step 3: Cross multiply
   116,012.68x = 160,100.76 × 65,711.68
4. Step 4: Simplify right side
   116,012.68x = 10,520,489,908.88
5. Step 5: Solve for x
   x = 10,520,489,908.88/116,012.68
6. Step 6: Final answer
   x = 90,683.97