Finding the Fourth Proportional to 173,890.50, 239,968.89 and 98,439

Step by Step Solution

1. Step 1: Write the proportion equation
   173,890.50 : 239,968.89 = 98,439 : x
2. Step 2: Convert to fraction form
   173,890.50/239,968.89 = 98,439/x
3. Step 3: Cross multiply
   173,890.50x = 239,968.89 × 98,439
4. Step 4: Simplify right side
   173,890.50x = 23,622,297,562.71
5. Step 5: Solve for x
   x = 23,622,297,562.71/173,890.50
6. Step 6: Final answer
   x = 135,845.82