Finding the Fourth Proportional to 102,013.40, 152,864.18 and 68,609.82

Step by Step Solution

1. Step 1: Write the proportion equation
   102,013.40 : 152,864.18 = 68,609.82 : x
2. Step 2: Convert to fraction form
   102,013.40/152,864.18 = 68,609.82/x
3. Step 3: Cross multiply
   102,013.40x = 152,864.18 × 68,609.82
4. Step 4: Simplify right side
   102,013.40x = 10,487,983,874.25
5. Step 5: Solve for x
   x = 10,487,983,874.25/102,013.40
6. Step 6: Final answer
   x = 102,809.86