Finding the Fourth Proportional to 105,969.72, 146,236.14 and 58,221.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,969.72 : 146,236.14 = 58,221.84 : x
2. Step 2: Convert to fraction form
   105,969.72/146,236.14 = 58,221.84/x
3. Step 3: Cross multiply
   105,969.72x = 146,236.14 × 58,221.84
4. Step 4: Simplify right side
   105,969.72x = 8,514,137,145.30
5. Step 5: Solve for x
   x = 8,514,137,145.30/105,969.72
6. Step 6: Final answer
   x = 80,345.00