Finding the Fourth Proportional to 103,243.08, 142,324.63 and 72,975

Step by Step Solution

1. Step 1: Write the proportion equation
   103,243.08 : 142,324.63 = 72,975 : x
2. Step 2: Convert to fraction form
   103,243.08/142,324.63 = 72,975/x
3. Step 3: Cross multiply
   103,243.08x = 142,324.63 × 72,975
4. Step 4: Simplify right side
   103,243.08x = 10,386,139,874.25
5. Step 5: Solve for x
   x = 10,386,139,874.25/103,243.08
6. Step 6: Final answer
   x = 100,598.90