Finding the Fourth Proportional to 123,012.57, 184,369.41 and 66,719.19

Step by Step Solution

1. Step 1: Write the proportion equation
   123,012.57 : 184,369.41 = 66,719.19 : x
2. Step 2: Convert to fraction form
   123,012.57/184,369.41 = 66,719.19/x
3. Step 3: Cross multiply
   123,012.57x = 184,369.41 × 66,719.19
4. Step 4: Simplify right side
   123,012.57x = 12,300,977,695.98
5. Step 5: Solve for x
   x = 12,300,977,695.98/123,012.57
6. Step 6: Final answer
   x = 99,997.73