Finding the Fourth Proportional to 508,765.82, 702,061.71 and 282,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   508,765.82 : 702,061.71 = 282,393.50 : x
2. Step 2: Convert to fraction form
   508,765.82/702,061.71 = 282,393.50/x
3. Step 3: Cross multiply
   508,765.82x = 702,061.71 × 282,393.50
4. Step 4: Simplify right side
   508,765.82x = 198,257,663,502.89
5. Step 5: Solve for x
   x = 198,257,663,502.89/508,765.82
6. Step 6: Final answer
   x = 389,683.54