Finding the Fourth Proportional to 111,476, 153,786.64 and 66,155.89

Step by Step Solution

1. Step 1: Write the proportion equation
   111,476 : 153,786.64 = 66,155.89 : x
2. Step 2: Convert to fraction form
   111,476/153,786.64 = 66,155.89/x
3. Step 3: Cross multiply
   111,476x = 153,786.64 × 66,155.89
4. Step 4: Simplify right side
   111,476x = 10,173,892,039.31
5. Step 5: Solve for x
   x = 10,173,892,039.31/111,476
6. Step 6: Final answer
   x = 91,265.31