Finding the Fourth Proportional to 247,786.63, 341,918.12 and 137,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   247,786.63 : 341,918.12 = 137,402.50 : x
2. Step 2: Convert to fraction form
   247,786.63/341,918.12 = 137,402.50/x
3. Step 3: Cross multiply
   247,786.63x = 341,918.12 × 137,402.50
4. Step 4: Simplify right side
   247,786.63x = 46,980,404,100.83
5. Step 5: Solve for x
   x = 46,980,404,100.83/247,786.63
6. Step 6: Final answer
   x = 189,600.24