Finding the Fourth Proportional to 105,994.40, 146,265.20 and 58,246.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,994.40 : 146,265.20 = 58,246.72 : x
2. Step 2: Convert to fraction form
   105,994.40/146,265.20 = 58,246.72/x
3. Step 3: Cross multiply
   105,994.40x = 146,265.20 × 58,246.72
4. Step 4: Simplify right side
   105,994.40x = 8,519,468,150.14
5. Step 5: Solve for x
   x = 8,519,468,150.14/105,994.40
6. Step 6: Final answer
   x = 80,376.59