Finding the Fourth Proportional to 51,233.87, 70,702.61 and 28,572.89

Step by Step Solution

1. Step 1: Write the proportion equation
   51,233.87 : 70,702.61 = 28,572.89 : x
2. Step 2: Convert to fraction form
   51,233.87/70,702.61 = 28,572.89/x
3. Step 3: Cross multiply
   51,233.87x = 70,702.61 × 28,572.89
4. Step 4: Simplify right side
   51,233.87x = 2,020,178,146.43
5. Step 5: Solve for x
   x = 2,020,178,146.43/51,233.87
6. Step 6: Final answer
   x = 39,430.52