Finding the Fourth Proportional to 50,185.12, 69,254.42 and 31,059.80

Step by Step Solution

1. Step 1: Write the proportion equation
   50,185.12 : 69,254.42 = 31,059.80 : x
2. Step 2: Convert to fraction form
   50,185.12/69,254.42 = 31,059.80/x
3. Step 3: Cross multiply
   50,185.12x = 69,254.42 × 31,059.80
4. Step 4: Simplify right side
   50,185.12x = 2,151,028,434.32
5. Step 5: Solve for x
   x = 2,151,028,434.32/50,185.12
6. Step 6: Final answer
   x = 42,861.88