Finding the Fourth Proportional to 106,003.56, 146,288.42 and 58,258.60

Step by Step Solution

1. Step 1: Write the proportion equation
   106,003.56 : 146,288.42 = 58,258.60 : x
2. Step 2: Convert to fraction form
   106,003.56/146,288.42 = 58,258.60/x
3. Step 3: Cross multiply
   106,003.56x = 146,288.42 × 58,258.60
4. Step 4: Simplify right side
   106,003.56x = 8,522,558,545.41
5. Step 5: Solve for x
   x = 8,522,558,545.41/106,003.56
6. Step 6: Final answer
   x = 80,398.80