Finding the Fourth Proportional to 105,891.98, 146,131.96 and 58,146.36

Step by Step Solution

1. Step 1: Write the proportion equation
   105,891.98 : 146,131.96 = 58,146.36 : x
2. Step 2: Convert to fraction form
   105,891.98/146,131.96 = 58,146.36/x
3. Step 3: Cross multiply
   105,891.98x = 146,131.96 × 58,146.36
4. Step 4: Simplify right side
   105,891.98x = 8,497,041,378.89
5. Step 5: Solve for x
   x = 8,497,041,378.89/105,891.98
6. Step 6: Final answer
   x = 80,242.54