Finding the Fourth Proportional to 298,070.72, 411,303.12 and 170,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   298,070.72 : 411,303.12 = 170,738.72 : x
2. Step 2: Convert to fraction form
   298,070.72/411,303.12 = 170,738.72/x
3. Step 3: Cross multiply
   298,070.72x = 411,303.12 × 170,738.72
4. Step 4: Simplify right side
   298,070.72x = 70,225,368,240.81
5. Step 5: Solve for x
   x = 70,225,368,240.81/298,070.72
6. Step 6: Final answer
   x = 235,599.69