Finding the Fourth Proportional to 105,918.02, 146,174.01 and 58,171.86

Step by Step Solution

1. Step 1: Write the proportion equation
   105,918.02 : 146,174.01 = 58,171.86 : x
2. Step 2: Convert to fraction form
   105,918.02/146,174.01 = 58,171.86/x
3. Step 3: Cross multiply
   105,918.02x = 146,174.01 × 58,171.86
4. Step 4: Simplify right side
   105,918.02x = 8,503,214,045.36
5. Step 5: Solve for x
   x = 8,503,214,045.36/105,918.02
6. Step 6: Final answer
   x = 80,281.09