Finding the Fourth Proportional to 105,782.72, 158,524.92 and 58,419.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,782.72 : 158,524.92 = 58,419.16 : x
2. Step 2: Convert to fraction form
   105,782.72/158,524.92 = 58,419.16/x
3. Step 3: Cross multiply
   105,782.72x = 158,524.92 × 58,419.16
4. Step 4: Simplify right side
   105,782.72x = 9,260,892,269.15
5. Step 5: Solve for x
   x = 9,260,892,269.15/105,782.72
6. Step 6: Final answer
   x = 87,546.37