Finding the Fourth Proportional to 58,258.50, 87,199.79 and 30,139.83

Step by Step Solution

1. Step 1: Write the proportion equation
   58,258.50 : 87,199.79 = 30,139.83 : x
2. Step 2: Convert to fraction form
   58,258.50/87,199.79 = 30,139.83/x
3. Step 3: Cross multiply
   58,258.50x = 87,199.79 × 30,139.83
4. Step 4: Simplify right side
   58,258.50x = 2,628,186,695.94
5. Step 5: Solve for x
   x = 2,628,186,695.94/58,258.50
6. Step 6: Final answer
   x = 45,112.50