Finding the Fourth Proportional to 345,727.27, 518,667.08 and 105,842.98

Step by Step Solution

1. Step 1: Write the proportion equation
   345,727.27 : 518,667.08 = 105,842.98 : x
2. Step 2: Convert to fraction form
   345,727.27/518,667.08 = 105,842.98/x
3. Step 3: Cross multiply
   345,727.27x = 518,667.08 × 105,842.98
4. Step 4: Simplify right side
   345,727.27x = 54,897,269,375.10
5. Step 5: Solve for x
   x = 54,897,269,375.10/345,727.27
6. Step 6: Final answer
   x = 158,787.79