Finding the Fourth Proportional to 123,433.12, 184,901.76 and 56,780.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,433.12 : 184,901.76 = 56,780.56 : x
2. Step 2: Convert to fraction form
   123,433.12/184,901.76 = 56,780.56/x
3. Step 3: Cross multiply
   123,433.12x = 184,901.76 × 56,780.56
4. Step 4: Simplify right side
   123,433.12x = 10,498,825,477.79
5. Step 5: Solve for x
   x = 10,498,825,477.79/123,433.12
6. Step 6: Final answer
   x = 85,056.79