Finding the Fourth Proportional to 123,417.80, 184,980.90 and 92,216.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,417.80 : 184,980.90 = 92,216.60 : x
2. Step 2: Convert to fraction form
   123,417.80/184,980.90 = 92,216.60/x
3. Step 3: Cross multiply
   123,417.80x = 184,980.90 × 92,216.60
4. Step 4: Simplify right side
   123,417.80x = 17,058,309,662.94
5. Step 5: Solve for x
   x = 17,058,309,662.94/123,417.80
6. Step 6: Final answer
   x = 138,215.96