Finding the Fourth Proportional to 111,267, 153,548.46 and 66,555

Step by Step Solution

1. Step 1: Write the proportion equation
   111,267 : 153,548.46 = 66,555 : x
2. Step 2: Convert to fraction form
   111,267/153,548.46 = 66,555/x
3. Step 3: Cross multiply
   111,267x = 153,548.46 × 66,555
4. Step 4: Simplify right side
   111,267x = 10,219,417,755.30
5. Step 5: Solve for x
   x = 10,219,417,755.30/111,267
6. Step 6: Final answer
   x = 91,845.90