Finding the Fourth Proportional to 168,938.72, 253,141.32 and 137,194.31

Step by Step Solution

1. Step 1: Write the proportion equation
   168,938.72 : 253,141.32 = 137,194.31 : x
2. Step 2: Convert to fraction form
   168,938.72/253,141.32 = 137,194.31/x
3. Step 3: Cross multiply
   168,938.72x = 253,141.32 × 137,194.31
4. Step 4: Simplify right side
   168,938.72x = 34,729,548,729.89
5. Step 5: Solve for x
   x = 34,729,548,729.89/168,938.72
6. Step 6: Final answer
   x = 205,574.84