Finding the Fourth Proportional to 105,865.98, 146,086.36 and 58,117.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,865.98 : 146,086.36 = 58,117.69 : x
2. Step 2: Convert to fraction form
   105,865.98/146,086.36 = 58,117.69/x
3. Step 3: Cross multiply
   105,865.98x = 146,086.36 × 58,117.69
4. Step 4: Simplify right side
   105,865.98x = 8,490,201,783.71
5. Step 5: Solve for x
   x = 8,490,201,783.71/105,865.98
6. Step 6: Final answer
   x = 80,197.64