Finding the Fourth Proportional to 50,818.32, 70,135.88 and 30,686.58

Step by Step Solution

1. Step 1: Write the proportion equation
   50,818.32 : 70,135.88 = 30,686.58 : x
2. Step 2: Convert to fraction form
   50,818.32/70,135.88 = 30,686.58/x
3. Step 3: Cross multiply
   50,818.32x = 70,135.88 × 30,686.58
4. Step 4: Simplify right side
   50,818.32x = 2,152,230,139.06
5. Step 5: Solve for x
   x = 2,152,230,139.06/50,818.32
6. Step 6: Final answer
   x = 42,351.46