Finding the Fourth Proportional to 583,429.50, 805,132.71 and 315,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   583,429.50 : 805,132.71 = 315,157.50 : x
2. Step 2: Convert to fraction form
   583,429.50/805,132.71 = 315,157.50/x
3. Step 3: Cross multiply
   583,429.50x = 805,132.71 × 315,157.50
4. Step 4: Simplify right side
   583,429.50x = 253,743,612,051.83
5. Step 5: Solve for x
   x = 253,743,612,051.83/583,429.50
6. Step 6: Final answer
   x = 434,917.35