Finding the Fourth Proportional to 103,612.37, 155,212.79 and 79,837.43

Step by Step Solution

1. Step 1: Write the proportion equation
   103,612.37 : 155,212.79 = 79,837.43 : x
2. Step 2: Convert to fraction form
   103,612.37/155,212.79 = 79,837.43/x
3. Step 3: Cross multiply
   103,612.37x = 155,212.79 × 79,837.43
4. Step 4: Simplify right side
   103,612.37x = 12,391,789,081.48
5. Step 5: Solve for x
   x = 12,391,789,081.48/103,612.37
6. Step 6: Final answer
   x = 119,597.59