Finding the Fourth Proportional to 111,136.29, 153,358.38 and 65,806.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,136.29 : 153,358.38 = 65,806.16 : x
2. Step 2: Convert to fraction form
   111,136.29/153,358.38 = 65,806.16/x
3. Step 3: Cross multiply
   111,136.29x = 153,358.38 × 65,806.16
4. Step 4: Simplify right side
   111,136.29x = 10,091,926,091.62
5. Step 5: Solve for x
   x = 10,091,926,091.62/111,136.29
6. Step 6: Final answer
   x = 90,806.76