Finding the Fourth Proportional to 65,515.50, 98,719.43 and 58,354.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,515.50 : 98,719.43 = 58,354.56 : x
2. Step 2: Convert to fraction form
   65,515.50/98,719.43 = 58,354.56/x
3. Step 3: Cross multiply
   65,515.50x = 98,719.43 × 58,354.56
4. Step 4: Simplify right side
   65,515.50x = 5,760,728,609.33
5. Step 5: Solve for x
   x = 5,760,728,609.33/65,515.50
6. Step 6: Final answer
   x = 87,929.25