Finding the Fourth Proportional to 56,928.42, 78,560.82 and 31,436.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,928.42 : 78,560.82 = 31,436.37 : x
2. Step 2: Convert to fraction form
   56,928.42/78,560.82 = 31,436.37/x
3. Step 3: Cross multiply
   56,928.42x = 78,560.82 × 31,436.37
4. Step 4: Simplify right side
   56,928.42x = 2,469,667,005.02
5. Step 5: Solve for x
   x = 2,469,667,005.02/56,928.42
6. Step 6: Final answer
   x = 43,381.97