Finding the Fourth Proportional to 51,082.35, 70,476.83 and 30,931.57

Step by Step Solution

1. Step 1: Write the proportion equation
   51,082.35 : 70,476.83 = 30,931.57 : x
2. Step 2: Convert to fraction form
   51,082.35/70,476.83 = 30,931.57/x
3. Step 3: Cross multiply
   51,082.35x = 70,476.83 × 30,931.57
4. Step 4: Simplify right side
   51,082.35x = 2,179,959,223.94
5. Step 5: Solve for x
   x = 2,179,959,223.94/51,082.35
6. Step 6: Final answer
   x = 42,675.39