Finding the Fourth Proportional to 111,127.67, 153,355 and 60,139.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,127.67 : 153,355 = 60,139.29 : x
2. Step 2: Convert to fraction form
   111,127.67/153,355 = 60,139.29/x
3. Step 3: Cross multiply
   111,127.67x = 153,355 × 60,139.29
4. Step 4: Simplify right side
   111,127.67x = 9,222,660,817.95
5. Step 5: Solve for x
   x = 9,222,660,817.95/111,127.67
6. Step 6: Final answer
   x = 82,991.58