Finding the Fourth Proportional to 215,292.72, 322,938.72 and 73,152.78

Step by Step Solution

1. Step 1: Write the proportion equation
   215,292.72 : 322,938.72 = 73,152.78 : x
2. Step 2: Convert to fraction form
   215,292.72/322,938.72 = 73,152.78/x
3. Step 3: Cross multiply
   215,292.72x = 322,938.72 × 73,152.78
4. Step 4: Simplify right side
   215,292.72x = 23,623,865,137.64
5. Step 5: Solve for x
   x = 23,623,865,137.64/215,292.72
6. Step 6: Final answer
   x = 109,729.05