Finding the Fourth Proportional to 112,842.40, 155,739.09 and 65,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,842.40 : 155,739.09 = 65,086.42 : x
2. Step 2: Convert to fraction form
   112,842.40/155,739.09 = 65,086.42/x
3. Step 3: Cross multiply
   112,842.40x = 155,739.09 × 65,086.42
4. Step 4: Simplify right side
   112,842.40x = 10,136,499,822.16
5. Step 5: Solve for x
   x = 10,136,499,822.16/112,842.40
6. Step 6: Final answer
   x = 89,828.82