Finding the Fourth Proportional to 103,650.88, 155,443.52 and 68,776

Step by Step Solution

1. Step 1: Write the proportion equation
   103,650.88 : 155,443.52 = 68,776 : x
2. Step 2: Convert to fraction form
   103,650.88/155,443.52 = 68,776/x
3. Step 3: Cross multiply
   103,650.88x = 155,443.52 × 68,776
4. Step 4: Simplify right side
   103,650.88x = 10,690,783,531.52
5. Step 5: Solve for x
   x = 10,690,783,531.52/103,650.88
6. Step 6: Final answer
   x = 103,142.24