Finding the Fourth Proportional to 105,868.62, 146,097.57 and 58,120.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,868.62 : 146,097.57 = 58,120.74 : x
2. Step 2: Convert to fraction form
   105,868.62/146,097.57 = 58,120.74/x
3. Step 3: Cross multiply
   105,868.62x = 146,097.57 × 58,120.74
4. Step 4: Simplify right side
   105,868.62x = 8,491,298,880.60
5. Step 5: Solve for x
   x = 8,491,298,880.60/105,868.62
6. Step 6: Final answer
   x = 80,206.00