Finding the Fourth Proportional to 52,789.02, 72,848.85 and 28,916.55

Step by Step Solution

1. Step 1: Write the proportion equation
   52,789.02 : 72,848.85 = 28,916.55 : x
2. Step 2: Convert to fraction form
   52,789.02/72,848.85 = 28,916.55/x
3. Step 3: Cross multiply
   52,789.02x = 72,848.85 × 28,916.55
4. Step 4: Simplify right side
   52,789.02x = 2,106,537,413.47
5. Step 5: Solve for x
   x = 2,106,537,413.47/52,789.02
6. Step 6: Final answer
   x = 39,904.84