Finding the Fourth Proportional to 58,258.37, 87,199.61 and 30,139.71

Step by Step Solution

1. Step 1: Write the proportion equation
   58,258.37 : 87,199.61 = 30,139.71 : x
2. Step 2: Convert to fraction form
   58,258.37/87,199.61 = 30,139.71/x
3. Step 3: Cross multiply
   58,258.37x = 87,199.61 × 30,139.71
4. Step 4: Simplify right side
   58,258.37x = 2,628,170,957.51
5. Step 5: Solve for x
   x = 2,628,170,957.51/58,258.37
6. Step 6: Final answer
   x = 45,112.33