Finding the Fourth Proportional to 260,085.01, 390,141 and 82,605.91

Step by Step Solution

1. Step 1: Write the proportion equation
   260,085.01 : 390,141 = 82,605.91 : x
2. Step 2: Convert to fraction form
   260,085.01/390,141 = 82,605.91/x
3. Step 3: Cross multiply
   260,085.01x = 390,141 × 82,605.91
4. Step 4: Simplify right side
   260,085.01x = 32,227,950,382.61
5. Step 5: Solve for x
   x = 32,227,950,382.61/260,085.01
6. Step 6: Final answer
   x = 123,913.14