Finding the Fourth Proportional to 249,498.56, 344,308.32 and 136,321.31

Step by Step Solution

1. Step 1: Write the proportion equation
   249,498.56 : 344,308.32 = 136,321.31 : x
2. Step 2: Convert to fraction form
   249,498.56/344,308.32 = 136,321.31/x
3. Step 3: Cross multiply
   249,498.56x = 344,308.32 × 136,321.31
4. Step 4: Simplify right side
   249,498.56x = 46,936,562,087.07
5. Step 5: Solve for x
   x = 46,936,562,087.07/249,498.56
6. Step 6: Final answer
   x = 188,123.58