Finding the Fourth Proportional to 28,075.48, 42,092.15 and 16,979.89

Step by Step Solution

1. Step 1: Write the proportion equation
   28,075.48 : 42,092.15 = 16,979.89 : x
2. Step 2: Convert to fraction form
   28,075.48/42,092.15 = 16,979.89/x
3. Step 3: Cross multiply
   28,075.48x = 42,092.15 × 16,979.89
4. Step 4: Simplify right side
   28,075.48x = 714,720,076.86
5. Step 5: Solve for x
   x = 714,720,076.86/28,075.48
6. Step 6: Final answer
   x = 25,457.09