Finding the Fourth Proportional to 82,118.37, 123,177.55 and 19,788.87

Step by Step Solution

1. Step 1: Write the proportion equation
   82,118.37 : 123,177.55 = 19,788.87 : x
2. Step 2: Convert to fraction form
   82,118.37/123,177.55 = 19,788.87/x
3. Step 3: Cross multiply
   82,118.37x = 123,177.55 × 19,788.87
4. Step 4: Simplify right side
   82,118.37x = 2,437,544,523.87
5. Step 5: Solve for x
   x = 2,437,544,523.87/82,118.37
6. Step 6: Final answer
   x = 29,683.30