Finding the Fourth Proportional to 105,904.19, 146,147.78 and 58,158.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,904.19 : 146,147.78 = 58,158.33 : x
2. Step 2: Convert to fraction form
   105,904.19/146,147.78 = 58,158.33/x
3. Step 3: Cross multiply
   105,904.19x = 146,147.78 × 58,158.33
4. Step 4: Simplify right side
   105,904.19x = 8,499,710,818.01
5. Step 5: Solve for x
   x = 8,499,710,818.01/105,904.19
6. Step 6: Final answer
   x = 80,258.49