Finding the Fourth Proportional to 103,613.10, 155,496.45 and 68,541.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,613.10 : 155,496.45 = 68,541.10 : x
2. Step 2: Convert to fraction form
   103,613.10/155,496.45 = 68,541.10/x
3. Step 3: Cross multiply
   103,613.10x = 155,496.45 × 68,541.10
4. Step 4: Simplify right side
   103,613.10x = 10,657,897,729.10
5. Step 5: Solve for x
   x = 10,657,897,729.10/103,613.10
6. Step 6: Final answer
   x = 102,862.45