Finding the Fourth Proportional to 52,609.12, 72,610 and 31,098

Step by Step Solution

1. Step 1: Write the proportion equation
   52,609.12 : 72,610 = 31,098 : x
2. Step 2: Convert to fraction form
   52,609.12/72,610 = 31,098/x
3. Step 3: Cross multiply
   52,609.12x = 72,610 × 31,098
4. Step 4: Simplify right side
   52,609.12x = 2,258,025,780
5. Step 5: Solve for x
   x = 2,258,025,780/52,609.12
6. Step 6: Final answer
   x = 42,920.80