Finding the Fourth Proportional to 106,016.38, 146,303.74 and 57,618.31

Step by Step Solution

1. Step 1: Write the proportion equation
   106,016.38 : 146,303.74 = 57,618.31 : x
2. Step 2: Convert to fraction form
   106,016.38/146,303.74 = 57,618.31/x
3. Step 3: Cross multiply
   106,016.38x = 146,303.74 × 57,618.31
4. Step 4: Simplify right side
   106,016.38x = 8,429,774,245.48
5. Step 5: Solve for x
   x = 8,429,774,245.48/106,016.38
6. Step 6: Final answer
   x = 79,513.88