Finding the Fourth Proportional to 195,513.78, 293,381.52 and 105,555.30

Step by Step Solution

1. Step 1: Write the proportion equation
   195,513.78 : 293,381.52 = 105,555.30 : x
2. Step 2: Convert to fraction form
   195,513.78/293,381.52 = 105,555.30/x
3. Step 3: Cross multiply
   195,513.78x = 293,381.52 × 105,555.30
4. Step 4: Simplify right side
   195,513.78x = 30,967,974,214.89
5. Step 5: Solve for x
   x = 30,967,974,214.89/195,513.78
6. Step 6: Final answer
   x = 158,392.79