Finding the Fourth Proportional to 42,185.23, 58,263.48 and 28,733.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,185.23 : 58,263.48 = 28,733.15 : x
2. Step 2: Convert to fraction form
   42,185.23/58,263.48 = 28,733.15/x
3. Step 3: Cross multiply
   42,185.23x = 58,263.48 × 28,733.15
4. Step 4: Simplify right side
   42,185.23x = 1,674,093,456.02
5. Step 5: Solve for x
   x = 1,674,093,456.02/42,185.23
6. Step 6: Final answer
   x = 39,684.35