Finding the Fourth Proportional to 103,615.26, 155,422.90 and 68,546.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,615.26 : 155,422.90 = 68,546.72 : x
2. Step 2: Convert to fraction form
   103,615.26/155,422.90 = 68,546.72/x
3. Step 3: Cross multiply
   103,615.26x = 155,422.90 × 68,546.72
4. Step 4: Simplify right side
   103,615.26x = 10,653,730,007.89
5. Step 5: Solve for x
   x = 10,653,730,007.89/103,615.26
6. Step 6: Final answer
   x = 102,820.09