Finding the Fourth Proportional to 104,839.48, 157,128.00 and 82,564.89

Step by Step Solution

1. Step 1: Write the proportion equation
   104,839.48 : 157,128.00 = 82,564.89 : x
2. Step 2: Convert to fraction form
   104,839.48/157,128.00 = 82,564.89/x
3. Step 3: Cross multiply
   104,839.48x = 157,128.00 × 82,564.89
4. Step 4: Simplify right side
   104,839.48x = 12,973,255,849.51
5. Step 5: Solve for x
   x = 12,973,255,849.51/104,839.48
6. Step 6: Final answer
   x = 123,743.99