Finding the Fourth Proportional to 103,789.10, 143,225.56 and 65,568.99

Step by Step Solution

1. Step 1: Write the proportion equation
   103,789.10 : 143,225.56 = 65,568.99 : x
2. Step 2: Convert to fraction form
   103,789.10/143,225.56 = 65,568.99/x
3. Step 3: Cross multiply
   103,789.10x = 143,225.56 × 65,568.99
4. Step 4: Simplify right side
   103,789.10x = 9,391,155,147.46
5. Step 5: Solve for x
   x = 9,391,155,147.46/103,789.10
6. Step 6: Final answer
   x = 90,483.06