Finding the Fourth Proportional to 52,712.55, 72,742.06 and 28,839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,712.55 : 72,742.06 = 28,839.42 : x
2. Step 2: Convert to fraction form
   52,712.55/72,742.06 = 28,839.42/x
3. Step 3: Cross multiply
   52,712.55x = 72,742.06 × 28,839.42
4. Step 4: Simplify right side
   52,712.55x = 2,097,838,456.29
5. Step 5: Solve for x
   x = 2,097,838,456.29/52,712.55
6. Step 6: Final answer
   x = 39,797.71