Finding the Fourth Proportional to 123,269.47, 170,057.84 and 72,256.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123,269.47 : 170,057.84 = 72,256.34 : x
2. Step 2: Convert to fraction form
   123,269.47/170,057.84 = 72,256.34/x
3. Step 3: Cross multiply
   123,269.47x = 170,057.84 × 72,256.34
4. Step 4: Simplify right side
   123,269.47x = 12,287,757,106.71
5. Step 5: Solve for x
   x = 12,287,757,106.71/123,269.47
6. Step 6: Final answer
   x = 99,682.08