Finding the Fourth Proportional to 82,001.74, 123,019.30 and 31,397.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,001.74 : 123,019.30 = 31,397.18 : x
2. Step 2: Convert to fraction form
   82,001.74/123,019.30 = 31,397.18/x
3. Step 3: Cross multiply
   82,001.74x = 123,019.30 × 31,397.18
4. Step 4: Simplify right side
   82,001.74x = 3,862,459,239.72
5. Step 5: Solve for x
   x = 3,862,459,239.72/82,001.74
6. Step 6: Final answer
   x = 47,102.16