Finding the Fourth Proportional to 52,615.35, 72,610.74 and 28,742.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,615.35 : 72,610.74 = 28,742.42 : x
2. Step 2: Convert to fraction form
   52,615.35/72,610.74 = 28,742.42/x
3. Step 3: Cross multiply
   52,615.35x = 72,610.74 × 28,742.42
4. Step 4: Simplify right side
   52,615.35x = 2,087,008,022.54
5. Step 5: Solve for x
   x = 2,087,008,022.54/52,615.35
6. Step 6: Final answer
   x = 39,665.38