Finding the Fourth Proportional to 158,712.18, 238,061.79 and 65,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,712.18 : 238,061.79 = 65,215.50 : x
2. Step 2: Convert to fraction form
   158,712.18/238,061.79 = 65,215.50/x
3. Step 3: Cross multiply
   158,712.18x = 238,061.79 × 65,215.50
4. Step 4: Simplify right side
   158,712.18x = 15,525,318,665.75
5. Step 5: Solve for x
   x = 15,525,318,665.75/158,712.18
6. Step 6: Final answer
   x = 97,820.59