Finding the Fourth Proportional to 105,913.17, 146,160.86 and 58,166.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,913.17 : 146,160.86 = 58,166.10 : x
2. Step 2: Convert to fraction form
   105,913.17/146,160.86 = 58,166.10/x
3. Step 3: Cross multiply
   105,913.17x = 146,160.86 × 58,166.10
4. Step 4: Simplify right side
   105,913.17x = 8,501,606,908.02
5. Step 5: Solve for x
   x = 8,501,606,908.02/105,913.17
6. Step 6: Final answer
   x = 80,269.59