Finding the Fourth Proportional to 111,010.55, 153,007.99 and 84,144.47

Step by Step Solution

1. Step 1: Write the proportion equation
   111,010.55 : 153,007.99 = 84,144.47 : x
2. Step 2: Convert to fraction form
   111,010.55/153,007.99 = 84,144.47/x
3. Step 3: Cross multiply
   111,010.55x = 153,007.99 × 84,144.47
4. Step 4: Simplify right side
   111,010.55x = 12,874,775,248.91
5. Step 5: Solve for x
   x = 12,874,775,248.91/111,010.55
6. Step 6: Final answer
   x = 115,977.95