Finding the Fourth Proportional to 128,766.89, 193,113.38 and 38,818.37

Step by Step Solution

1. Step 1: Write the proportion equation
   128,766.89 : 193,113.38 = 38,818.37 : x
2. Step 2: Convert to fraction form
   128,766.89/193,113.38 = 38,818.37/x
3. Step 3: Cross multiply
   128,766.89x = 193,113.38 × 38,818.37
4. Step 4: Simplify right side
   128,766.89x = 7,496,345,768.27
5. Step 5: Solve for x
   x = 7,496,345,768.27/128,766.89
6. Step 6: Final answer
   x = 58,216.41