Finding the Fourth Proportional to 82,562.60, 123,804.85 and 31,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,562.60 : 123,804.85 = 31,985.31 : x
2. Step 2: Convert to fraction form
   82,562.60/123,804.85 = 31,985.31/x
3. Step 3: Cross multiply
   82,562.60x = 123,804.85 × 31,985.31
4. Step 4: Simplify right side
   82,562.60x = 3,959,936,473.71
5. Step 5: Solve for x
   x = 3,959,936,473.71/82,562.60
6. Step 6: Final answer
   x = 47,962.84