Finding the Fourth Proportional to 158,603.98, 218,876.30 and 86,983.38

Step by Step Solution

1. Step 1: Write the proportion equation
   158,603.98 : 218,876.30 = 86,983.38 : x
2. Step 2: Convert to fraction form
   158,603.98/218,876.30 = 86,983.38/x
3. Step 3: Cross multiply
   158,603.98x = 218,876.30 × 86,983.38
4. Step 4: Simplify right side
   158,603.98x = 19,038,600,375.89
5. Step 5: Solve for x
   x = 19,038,600,375.89/158,603.98
6. Step 6: Final answer
   x = 120,038.60