Finding the Fourth Proportional to 123,085.78, 184,431.80 and 111,275.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,085.78 : 184,431.80 = 111,275.98 : x
2. Step 2: Convert to fraction form
   123,085.78/184,431.80 = 111,275.98/x
3. Step 3: Cross multiply
   123,085.78x = 184,431.80 × 111,275.98
4. Step 4: Simplify right side
   123,085.78x = 20,522,829,105.27
5. Step 5: Solve for x
   x = 20,522,829,105.27/123,085.78
6. Step 6: Final answer
   x = 166,735.99