Finding the Fourth Proportional to 139,723.34, 192,788.31 and 83,123.66

Step by Step Solution

1. Step 1: Write the proportion equation
   139,723.34 : 192,788.31 = 83,123.66 : x
2. Step 2: Convert to fraction form
   139,723.34/192,788.31 = 83,123.66/x
3. Step 3: Cross multiply
   139,723.34x = 192,788.31 × 83,123.66
4. Step 4: Simplify right side
   139,723.34x = 16,025,269,932.41
5. Step 5: Solve for x
   x = 16,025,269,932.41/139,723.34
6. Step 6: Final answer
   x = 114,692.86