Finding the Fourth Proportional to 251,604.18, 377,443.50 and 83,142.30

Step by Step Solution

1. Step 1: Write the proportion equation
   251,604.18 : 377,443.50 = 83,142.30 : x
2. Step 2: Convert to fraction form
   251,604.18/377,443.50 = 83,142.30/x
3. Step 3: Cross multiply
   251,604.18x = 377,443.50 × 83,142.30
4. Step 4: Simplify right side
   251,604.18x = 31,381,520,710.05
5. Step 5: Solve for x
   x = 31,381,520,710.05/251,604.18
6. Step 6: Final answer
   x = 124,725.75