Finding the Fourth Proportional to 111,172.62, 153,418.05 and 60,185.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,172.62 : 153,418.05 = 60,185.35 : x
2. Step 2: Convert to fraction form
   111,172.62/153,418.05 = 60,185.35/x
3. Step 3: Cross multiply
   111,172.62x = 153,418.05 × 60,185.35
4. Step 4: Simplify right side
   111,172.62x = 9,233,519,035.57
5. Step 5: Solve for x
   x = 9,233,519,035.57/111,172.62
6. Step 6: Final answer
   x = 83,055.69