Finding the Fourth Proportional to 123,103.56, 184,486.86 and 66,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,103.56 : 184,486.86 = 66,870.12 : x
2. Step 2: Convert to fraction form
   123,103.56/184,486.86 = 66,870.12/x
3. Step 3: Cross multiply
   123,103.56x = 184,486.86 × 66,870.12
4. Step 4: Simplify right side
   123,103.56x = 12,336,658,466.62
5. Step 5: Solve for x
   x = 12,336,658,466.62/123,103.56
6. Step 6: Final answer
   x = 100,213.66