Finding the Fourth Proportional to 52,840.24, 72,919 and 28,967.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,840.24 : 72,919 = 28,967.31 : x
2. Step 2: Convert to fraction form
   52,840.24/72,919 = 28,967.31/x
3. Step 3: Cross multiply
   52,840.24x = 72,919 × 28,967.31
4. Step 4: Simplify right side
   52,840.24x = 2,112,267,277.89
5. Step 5: Solve for x
   x = 2,112,267,277.89/52,840.24
6. Step 6: Final answer
   x = 39,974.60