Finding the Fourth Proportional to 507,502.72, 700,302.72 and 281,105.92

Step by Step Solution

1. Step 1: Write the proportion equation
   507,502.72 : 700,302.72 = 281,105.92 : x
2. Step 2: Convert to fraction form
   507,502.72/700,302.72 = 281,105.92/x
3. Step 3: Cross multiply
   507,502.72x = 700,302.72 × 281,105.92
4. Step 4: Simplify right side
   507,502.72x = 196,859,240,384.10
5. Step 5: Solve for x
   x = 196,859,240,384.10/507,502.72
6. Step 6: Final answer
   x = 387,897.90