Finding the Fourth Proportional to 105,814.63, 146,028.41 and 58,069.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,814.63 : 146,028.41 = 58,069.69 : x
2. Step 2: Convert to fraction form
   105,814.63/146,028.41 = 58,069.69/x
3. Step 3: Cross multiply
   105,814.63x = 146,028.41 × 58,069.69
4. Step 4: Simplify right side
   105,814.63x = 8,479,824,499.89
5. Step 5: Solve for x
   x = 8,479,824,499.89/105,814.63
6. Step 6: Final answer
   x = 80,138.49