Finding the Fourth Proportional to 123,400.51, 184,854.12 and 56,749.30

Step by Step Solution

1. Step 1: Write the proportion equation
   123,400.51 : 184,854.12 = 56,749.30 : x
2. Step 2: Convert to fraction form
   123,400.51/184,854.12 = 56,749.30/x
3. Step 3: Cross multiply
   123,400.51x = 184,854.12 × 56,749.30
4. Step 4: Simplify right side
   123,400.51x = 10,490,341,912.12
5. Step 5: Solve for x
   x = 10,490,341,912.12/123,400.51
6. Step 6: Final answer
   x = 85,010.52