Finding the Fourth Proportional to 111,561.56, 153,939.47 and 65,623.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,561.56 : 153,939.47 = 65,623.29 : x
2. Step 2: Convert to fraction form
   111,561.56/153,939.47 = 65,623.29/x
3. Step 3: Cross multiply
   111,561.56x = 153,939.47 × 65,623.29
4. Step 4: Simplify right side
   111,561.56x = 10,102,014,154.14
5. Step 5: Solve for x
   x = 10,102,014,154.14/111,561.56
6. Step 6: Final answer
   x = 90,551.03