Finding the Fourth Proportional to 42,549.21, 58,674.38 and 28,204.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,549.21 : 58,674.38 = 28,204.07 : x
2. Step 2: Convert to fraction form
   42,549.21/58,674.38 = 28,204.07/x
3. Step 3: Cross multiply
   42,549.21x = 58,674.38 × 28,204.07
4. Step 4: Simplify right side
   42,549.21x = 1,654,855,886.33
5. Step 5: Solve for x
   x = 1,654,855,886.33/42,549.21
6. Step 6: Final answer
   x = 38,892.75