Finding the Fourth Proportional to 146,015.83, 218,939.91 and 57,165.31

Step by Step Solution

1. Step 1: Write the proportion equation
   146,015.83 : 218,939.91 = 57,165.31 : x
2. Step 2: Convert to fraction form
   146,015.83/218,939.91 = 57,165.31/x
3. Step 3: Cross multiply
   146,015.83x = 218,939.91 × 57,165.31
4. Step 4: Simplify right side
   146,015.83x = 12,515,767,826.52
5. Step 5: Solve for x
   x = 12,515,767,826.52/146,015.83
6. Step 6: Final answer
   x = 85,715.14