Finding the Fourth Proportional to 103,786.10, 155,679.15 and 83,050.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,786.10 : 155,679.15 = 83,050.10 : x
2. Step 2: Convert to fraction form
   103,786.10/155,679.15 = 83,050.10/x
3. Step 3: Cross multiply
   103,786.10x = 155,679.15 × 83,050.10
4. Step 4: Simplify right side
   103,786.10x = 12,929,168,975.42
5. Step 5: Solve for x
   x = 12,929,168,975.42/103,786.10
6. Step 6: Final answer
   x = 124,575.15