Finding the Fourth Proportional to 42,633.60, 58,790.79 and 28,288.41

Step by Step Solution

1. Step 1: Write the proportion equation
   42,633.60 : 58,790.79 = 28,288.41 : x
2. Step 2: Convert to fraction form
   42,633.60/58,790.79 = 28,288.41/x
3. Step 3: Cross multiply
   42,633.60x = 58,790.79 × 28,288.41
4. Step 4: Simplify right side
   42,633.60x = 1,663,097,971.74
5. Step 5: Solve for x
   x = 1,663,097,971.74/42,633.60
6. Step 6: Final answer
   x = 39,009.09