Finding the Fourth Proportional to 53,709.98, 74,103.05 and 31,040.72

Step by Step Solution

1. Step 1: Write the proportion equation
   53,709.98 : 74,103.05 = 31,040.72 : x
2. Step 2: Convert to fraction form
   53,709.98/74,103.05 = 31,040.72/x
3. Step 3: Cross multiply
   53,709.98x = 74,103.05 × 31,040.72
4. Step 4: Simplify right side
   53,709.98x = 2,300,211,870.99
5. Step 5: Solve for x
   x = 2,300,211,870.99/53,709.98
6. Step 6: Final answer
   x = 42,826.53