Finding the Fourth Proportional to 51,293.04, 70,782.42 and 31,150.77

Step by Step Solution

1. Step 1: Write the proportion equation
   51,293.04 : 70,782.42 = 31,150.77 : x
2. Step 2: Convert to fraction form
   51,293.04/70,782.42 = 31,150.77/x
3. Step 3: Cross multiply
   51,293.04x = 70,782.42 × 31,150.77
4. Step 4: Simplify right side
   51,293.04x = 2,204,926,885.46
5. Step 5: Solve for x
   x = 2,204,926,885.46/51,293.04
6. Step 6: Final answer
   x = 42,986.86