Finding the Fourth Proportional to 247,765.89, 341,940.72 and 138,869.69

Step by Step Solution

1. Step 1: Write the proportion equation
   247,765.89 : 341,940.72 = 138,869.69 : x
2. Step 2: Convert to fraction form
   247,765.89/341,940.72 = 138,869.69/x
3. Step 3: Cross multiply
   247,765.89x = 341,940.72 × 138,869.69
4. Step 4: Simplify right side
   247,765.89x = 47,485,200,075.07
5. Step 5: Solve for x
   x = 47,485,200,075.07/247,765.89
6. Step 6: Final answer
   x = 191,653.50