Finding the Fourth Proportional to 103,892.10, 155,449.35 and 68,900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,892.10 : 155,449.35 = 68,900.10 : x
2. Step 2: Convert to fraction form
   103,892.10/155,449.35 = 68,900.10/x
3. Step 3: Cross multiply
   103,892.10x = 155,449.35 × 68,900.10
4. Step 4: Simplify right side
   103,892.10x = 10,710,475,759.94
5. Step 5: Solve for x
   x = 10,710,475,759.94/103,892.10
6. Step 6: Final answer
   x = 103,092.30