Finding the Fourth Proportional to 42,478.56, 58,619.70 and 23,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,478.56 : 58,619.70 = 23,615.28 : x
2. Step 2: Convert to fraction form
   42,478.56/58,619.70 = 23,615.28/x
3. Step 3: Cross multiply
   42,478.56x = 58,619.70 × 23,615.28
4. Step 4: Simplify right side
   42,478.56x = 1,384,320,629.02
5. Step 5: Solve for x
   x = 1,384,320,629.02/42,478.56
6. Step 6: Final answer
   x = 32,588.69