Finding the Fourth Proportional to 106,431.27, 146,878.24 and 58,687.69

Step by Step Solution

1. Step 1: Write the proportion equation
   106,431.27 : 146,878.24 = 58,687.69 : x
2. Step 2: Convert to fraction form
   106,431.27/146,878.24 = 58,687.69/x
3. Step 3: Cross multiply
   106,431.27x = 146,878.24 × 58,687.69
4. Step 4: Simplify right side
   106,431.27x = 8,619,944,323.33
5. Step 5: Solve for x
   x = 8,619,944,323.33/106,431.27
6. Step 6: Final answer
   x = 80,990.71