Finding the Fourth Proportional to 51,557.89, 71,151.86 and 28,897.06

Step by Step Solution

1. Step 1: Write the proportion equation
   51,557.89 : 71,151.86 = 28,897.06 : x
2. Step 2: Convert to fraction form
   51,557.89/71,151.86 = 28,897.06/x
3. Step 3: Cross multiply
   51,557.89x = 71,151.86 × 28,897.06
4. Step 4: Simplify right side
   51,557.89x = 2,056,079,567.53
5. Step 5: Solve for x
   x = 2,056,079,567.53/51,557.89
6. Step 6: Final answer
   x = 39,879.05