Finding the Fourth Proportional to 82,046.65, 123,326.87 and 54,145.99

Step by Step Solution

1. Step 1: Write the proportion equation
   82,046.65 : 123,326.87 = 54,145.99 : x
2. Step 2: Convert to fraction form
   82,046.65/123,326.87 = 54,145.99/x
3. Step 3: Cross multiply
   82,046.65x = 123,326.87 × 54,145.99
4. Step 4: Simplify right side
   82,046.65x = 6,677,655,507.34
5. Step 5: Solve for x
   x = 6,677,655,507.34/82,046.65
6. Step 6: Final answer
   x = 81,388.53