Finding the Fourth Proportional to 58,300.56, 87,453.58 and 18,860.76

Step by Step Solution

1. Step 1: Write the proportion equation
   58,300.56 : 87,453.58 = 18,860.76 : x
2. Step 2: Convert to fraction form
   58,300.56/87,453.58 = 18,860.76/x
3. Step 3: Cross multiply
   58,300.56x = 87,453.58 × 18,860.76
4. Step 4: Simplify right side
   58,300.56x = 1,649,440,983.52
5. Step 5: Solve for x
   x = 1,649,440,983.52/58,300.56
6. Step 6: Final answer
   x = 28,292.03