Finding the Fourth Proportional to 52,617.10, 72,613.16 and 28,744.17

Step by Step Solution

1. Step 1: Write the proportion equation
   52,617.10 : 72,613.16 = 28,744.17 : x
2. Step 2: Convert to fraction form
   52,617.10/72,613.16 = 28,744.17/x
3. Step 3: Cross multiply
   52,617.10x = 72,613.16 × 28,744.17
4. Step 4: Simplify right side
   52,617.10x = 2,087,205,015.28
5. Step 5: Solve for x
   x = 2,087,205,015.28/52,617.10
6. Step 6: Final answer
   x = 39,667.81