Finding the Fourth Proportional to 42,491.05, 58,650.01 and 28,343.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,491.05 : 58,650.01 = 28,343.86 : x
2. Step 2: Convert to fraction form
   42,491.05/58,650.01 = 28,343.86/x
3. Step 3: Cross multiply
   42,491.05x = 58,650.01 × 28,343.86
4. Step 4: Simplify right side
   42,491.05x = 1,662,367,454.95
5. Step 5: Solve for x
   x = 1,662,367,454.95/42,491.05
6. Step 6: Final answer
   x = 39,122.77