Finding the Fourth Proportional to 105,815.33, 146,029.35 and 58,070.37

Step by Step Solution

1. Step 1: Write the proportion equation
   105,815.33 : 146,029.35 = 58,070.37 : x
2. Step 2: Convert to fraction form
   105,815.33/146,029.35 = 58,070.37/x
3. Step 3: Cross multiply
   105,815.33x = 146,029.35 × 58,070.37
4. Step 4: Simplify right side
   105,815.33x = 8,479,978,385.36
5. Step 5: Solve for x
   x = 8,479,978,385.36/105,815.33
6. Step 6: Final answer
   x = 80,139.41