Finding the Fourth Proportional to 50,885.50, 70,221.99 and 31,013.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,885.50 : 70,221.99 = 31,013.50 : x
2. Step 2: Convert to fraction form
   50,885.50/70,221.99 = 31,013.50/x
3. Step 3: Cross multiply
   50,885.50x = 70,221.99 × 31,013.50
4. Step 4: Simplify right side
   50,885.50x = 2,177,829,686.87
5. Step 5: Solve for x
   x = 2,177,829,686.87/50,885.50
6. Step 6: Final answer
   x = 42,798.63