Finding the Fourth Proportional to 42,823.02, 59,116.48 and 28,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,823.02 : 59,116.48 = 28,506.72 : x
2. Step 2: Convert to fraction form
   42,823.02/59,116.48 = 28,506.72/x
3. Step 3: Cross multiply
   42,823.02x = 59,116.48 × 28,506.72
4. Step 4: Simplify right side
   42,823.02x = 1,685,216,942.75
5. Step 5: Solve for x
   x = 1,685,216,942.75/42,823.02
6. Step 6: Final answer
   x = 39,353.06