Finding the Fourth Proportional to 111,186.81, 153,436.28 and 60,885.81

Step by Step Solution

1. Step 1: Write the proportion equation
   111,186.81 : 153,436.28 = 60,885.81 : x
2. Step 2: Convert to fraction form
   111,186.81/153,436.28 = 60,885.81/x
3. Step 3: Cross multiply
   111,186.81x = 153,436.28 × 60,885.81
4. Step 4: Simplify right side
   111,186.81x = 9,342,091,886.76
5. Step 5: Solve for x
   x = 9,342,091,886.76/111,186.81
6. Step 6: Final answer
   x = 84,021.58