Finding the Fourth Proportional to 171,300.30, 256,861.91 and 75,198.18

Step by Step Solution

1. Step 1: Write the proportion equation
   171,300.30 : 256,861.91 = 75,198.18 : x
2. Step 2: Convert to fraction form
   171,300.30/256,861.91 = 75,198.18/x
3. Step 3: Cross multiply
   171,300.30x = 256,861.91 × 75,198.18
4. Step 4: Simplify right side
   171,300.30x = 19,315,548,143.32
5. Step 5: Solve for x
   x = 19,315,548,143.32/171,300.30
6. Step 6: Final answer
   x = 112,758.40