Finding the Fourth Proportional to 42,824.02, 59,117.86 and 28,507.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,824.02 : 59,117.86 = 28,507.72 : x
2. Step 2: Convert to fraction form
   42,824.02/59,117.86 = 28,507.72/x
3. Step 3: Cross multiply
   42,824.02x = 59,117.86 × 28,507.72
4. Step 4: Simplify right side
   42,824.02x = 1,685,315,399.88
5. Step 5: Solve for x
   x = 1,685,315,399.88/42,824.02
6. Step 6: Final answer
   x = 39,354.44