Finding the Fourth Proportional to 56,456.56, 77,908.20 and 31,307.92

Step by Step Solution

1. Step 1: Write the proportion equation
   56,456.56 : 77,908.20 = 31,307.92 : x
2. Step 2: Convert to fraction form
   56,456.56/77,908.20 = 31,307.92/x
3. Step 3: Cross multiply
   56,456.56x = 77,908.20 × 31,307.92
4. Step 4: Simplify right side
   56,456.56x = 2,439,143,692.94
5. Step 5: Solve for x
   x = 2,439,143,692.94/56,456.56
6. Step 6: Final answer
   x = 43,203.90