Finding the Fourth Proportional to 105,946.18, 146,206.72 and 58,200.63

Step by Step Solution

1. Step 1: Write the proportion equation
   105,946.18 : 146,206.72 = 58,200.63 : x
2. Step 2: Convert to fraction form
   105,946.18/146,206.72 = 58,200.63/x
3. Step 3: Cross multiply
   105,946.18x = 146,206.72 × 58,200.63
4. Step 4: Simplify right side
   105,946.18x = 8,509,322,738.71
5. Step 5: Solve for x
   x = 8,509,322,738.71/105,946.18
6. Step 6: Final answer
   x = 80,317.41