Finding the Fourth Proportional to 81,996.87, 123,012.56 and 46,475.21

Step by Step Solution

1. Step 1: Write the proportion equation
   81,996.87 : 123,012.56 = 46,475.21 : x
2. Step 2: Convert to fraction form
   81,996.87/123,012.56 = 46,475.21/x
3. Step 3: Cross multiply
   81,996.87x = 123,012.56 × 46,475.21
4. Step 4: Simplify right side
   81,996.87x = 5,717,034,052.07
5. Step 5: Solve for x
   x = 5,717,034,052.07/81,996.87
6. Step 6: Final answer
   x = 69,722.59