Finding the Fourth Proportional to 52,540.71, 72,506.42 and 28,667.89

Step by Step Solution

1. Step 1: Write the proportion equation
   52,540.71 : 72,506.42 = 28,667.89 : x
2. Step 2: Convert to fraction form
   52,540.71/72,506.42 = 28,667.89/x
3. Step 3: Cross multiply
   52,540.71x = 72,506.42 × 28,667.89
4. Step 4: Simplify right side
   52,540.71x = 2,078,606,072.85
5. Step 5: Solve for x
   x = 2,078,606,072.85/52,540.71
6. Step 6: Final answer
   x = 39,561.82