Finding the Fourth Proportional to 42,198.45, 58,173.73 and 28,752.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,198.45 : 58,173.73 = 28,752.45 : x
2. Step 2: Convert to fraction form
   42,198.45/58,173.73 = 28,752.45/x
3. Step 3: Cross multiply
   42,198.45x = 58,173.73 × 28,752.45
4. Step 4: Simplify right side
   42,198.45x = 1,672,637,263.14
5. Step 5: Solve for x
   x = 1,672,637,263.14/42,198.45
6. Step 6: Final answer
   x = 39,637.41