Finding the Fourth Proportional to 145,166.31, 217,780.58 and 50,399.48

Step by Step Solution

1. Step 1: Write the proportion equation
   145,166.31 : 217,780.58 = 50,399.48 : x
2. Step 2: Convert to fraction form
   145,166.31/217,780.58 = 50,399.48/x
3. Step 3: Cross multiply
   145,166.31x = 217,780.58 × 50,399.48
4. Step 4: Simplify right side
   145,166.31x = 10,976,028,656.55
5. Step 5: Solve for x
   x = 10,976,028,656.55/145,166.31
6. Step 6: Final answer
   x = 75,610.03