Finding the Fourth Proportional to 105,989.76, 146,267.52 and 58,245.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,989.76 : 146,267.52 = 58,245.12 : x
2. Step 2: Convert to fraction form
   105,989.76/146,267.52 = 58,245.12/x
3. Step 3: Cross multiply
   105,989.76x = 146,267.52 × 58,245.12
4. Step 4: Simplify right side
   105,989.76x = 8,519,369,254.50
5. Step 5: Solve for x
   x = 8,519,369,254.50/105,989.76
6. Step 6: Final answer
   x = 80,379.17