Finding the Fourth Proportional to 105,903.94, 146,147.43 and 58,158.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,903.94 : 146,147.43 = 58,158.09 : x
2. Step 2: Convert to fraction form
   105,903.94/146,147.43 = 58,158.09/x
3. Step 3: Cross multiply
   105,903.94x = 146,147.43 × 58,158.09
4. Step 4: Simplify right side
   105,903.94x = 8,499,655,387.21
5. Step 5: Solve for x
   x = 8,499,655,387.21/105,903.94
6. Step 6: Final answer
   x = 80,258.16