Finding the Fourth Proportional to 42,851.22, 59,154.89 and 28,534.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,851.22 : 59,154.89 = 28,534.88 : x
2. Step 2: Convert to fraction form
   42,851.22/59,154.89 = 28,534.88/x
3. Step 3: Cross multiply
   42,851.22x = 59,154.89 × 28,534.88
4. Step 4: Simplify right side
   42,851.22x = 1,687,977,687.56
5. Step 5: Solve for x
   x = 1,687,977,687.56/42,851.22
6. Step 6: Final answer
   x = 39,391.59