Finding the Fourth Proportional to 103,642.56, 142,854.56 and 73,389.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,642.56 : 142,854.56 = 73,389.12 : x
2. Step 2: Convert to fraction form
   103,642.56/142,854.56 = 73,389.12/x
3. Step 3: Cross multiply
   103,642.56x = 142,854.56 × 73,389.12
4. Step 4: Simplify right side
   103,642.56x = 10,483,970,446.39
5. Step 5: Solve for x
   x = 10,483,970,446.39/103,642.56
6. Step 6: Final answer
   x = 101,155.07