Finding the Fourth Proportional to 42,763.50, 59,013.72 and 28,650.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.50 : 59,013.72 = 28,650.06 : x
2. Step 2: Convert to fraction form
   42,763.50/59,013.72 = 28,650.06/x
3. Step 3: Cross multiply
   42,763.50x = 59,013.72 × 28,650.06
4. Step 4: Simplify right side
   42,763.50x = 1,690,746,618.82
5. Step 5: Solve for x
   x = 1,690,746,618.82/42,763.50
6. Step 6: Final answer
   x = 39,537.14