Finding the Fourth Proportional to 86,605.88, 129,949.94 and 59,992.82

Step by Step Solution

1. Step 1: Write the proportion equation
   86,605.88 : 129,949.94 = 59,992.82 : x
2. Step 2: Convert to fraction form
   86,605.88/129,949.94 = 59,992.82/x
3. Step 3: Cross multiply
   86,605.88x = 129,949.94 × 59,992.82
4. Step 4: Simplify right side
   86,605.88x = 7,796,063,009.52
5. Step 5: Solve for x
   x = 7,796,063,009.52/86,605.88
6. Step 6: Final answer
   x = 90,017.72