Finding the Fourth Proportional to 56,626.77, 78,145.85 and 31,134.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,626.77 : 78,145.85 = 31,134.25 : x
2. Step 2: Convert to fraction form
   56,626.77/78,145.85 = 31,134.25/x
3. Step 3: Cross multiply
   56,626.77x = 78,145.85 × 31,134.25
4. Step 4: Simplify right side
   56,626.77x = 2,433,012,605.88
5. Step 5: Solve for x
   x = 2,433,012,605.88/56,626.77
6. Step 6: Final answer
   x = 42,965.76