Finding the Fourth Proportional to 111,353.67, 153,668.61 and 66,054.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,353.67 : 153,668.61 = 66,054.42 : x
2. Step 2: Convert to fraction form
   111,353.67/153,668.61 = 66,054.42/x
3. Step 3: Cross multiply
   111,353.67x = 153,668.61 × 66,054.42
4. Step 4: Simplify right side
   111,353.67x = 10,150,490,905.76
5. Step 5: Solve for x
   x = 10,150,490,905.76/111,353.67
6. Step 6: Final answer
   x = 91,155.42