Finding the Fourth Proportional to 105,982.71, 146,255.57 and 58,238.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,982.71 : 146,255.57 = 58,238.69 : x
2. Step 2: Convert to fraction form
   105,982.71/146,255.57 = 58,238.69/x
3. Step 3: Cross multiply
   105,982.71x = 146,255.57 × 58,238.69
4. Step 4: Simplify right side
   105,982.71x = 8,517,731,779.53
5. Step 5: Solve for x
   x = 8,517,731,779.53/105,982.71
6. Step 6: Final answer
   x = 80,369.07