Finding the Fourth Proportional to 215,304.50, 323,025.89 and 65,573.75

Step by Step Solution

1. Step 1: Write the proportion equation
   215,304.50 : 323,025.89 = 65,573.75 : x
2. Step 2: Convert to fraction form
   215,304.50/323,025.89 = 65,573.75/x
3. Step 3: Cross multiply
   215,304.50x = 323,025.89 × 65,573.75
4. Step 4: Simplify right side
   215,304.50x = 21,182,017,011.39
5. Step 5: Solve for x
   x = 21,182,017,011.39/215,304.50
6. Step 6: Final answer
   x = 98,381.68