Finding the Fourth Proportional to 58,085.57, 87,144.86 and 18,645.86

Step by Step Solution

1. Step 1: Write the proportion equation
   58,085.57 : 87,144.86 = 18,645.86 : x
2. Step 2: Convert to fraction form
   58,085.57/87,144.86 = 18,645.86/x
3. Step 3: Cross multiply
   58,085.57x = 87,144.86 × 18,645.86
4. Step 4: Simplify right side
   58,085.57x = 1,624,891,123.76
5. Step 5: Solve for x
   x = 1,624,891,123.76/58,085.57
6. Step 6: Final answer
   x = 27,974.09