Finding the Fourth Proportional to 143,483.57, 215,118.23 and 98,983.38

Step by Step Solution

1. Step 1: Write the proportion equation
   143,483.57 : 215,118.23 = 98,983.38 : x
2. Step 2: Convert to fraction form
   143,483.57/215,118.23 = 98,983.38/x
3. Step 3: Cross multiply
   143,483.57x = 215,118.23 × 98,983.38
4. Step 4: Simplify right side
   143,483.57x = 21,293,129,010.10
5. Step 5: Solve for x
   x = 21,293,129,010.10/143,483.57
6. Step 6: Final answer
   x = 148,401.17