Finding the Fourth Proportional to 52,616.64, 72,608.86 and 28,744.17

Step by Step Solution

1. Step 1: Write the proportion equation
   52,616.64 : 72,608.86 = 28,744.17 : x
2. Step 2: Convert to fraction form
   52,616.64/72,608.86 = 28,744.17/x
3. Step 3: Cross multiply
   52,616.64x = 72,608.86 × 28,744.17
4. Step 4: Simplify right side
   52,616.64x = 2,087,081,017.31
5. Step 5: Solve for x
   x = 2,087,081,017.31/52,616.64
6. Step 6: Final answer
   x = 39,665.80