Finding the Fourth Proportional to 149,141.69, 205,815.25 and 84,623.59

Step by Step Solution

1. Step 1: Write the proportion equation
   149,141.69 : 205,815.25 = 84,623.59 : x
2. Step 2: Convert to fraction form
   149,141.69/205,815.25 = 84,623.59/x
3. Step 3: Cross multiply
   149,141.69x = 205,815.25 × 84,623.59
4. Step 4: Simplify right side
   149,141.69x = 17,416,825,218.79
5. Step 5: Solve for x
   x = 17,416,825,218.79/149,141.69
6. Step 6: Final answer
   x = 116,780.39