Finding the Fourth Proportional to 42,108.86, 58,063.03 and 28,687.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108.86 : 58,063.03 = 28,687.97 : x
2. Step 2: Convert to fraction form
   42,108.86/58,063.03 = 28,687.97/x
3. Step 3: Cross multiply
   42,108.86x = 58,063.03 × 28,687.97
4. Step 4: Simplify right side
   42,108.86x = 1,665,710,536.19
5. Step 5: Solve for x
   x = 1,665,710,536.19/42,108.86
6. Step 6: Final answer
   x = 39,557.24