Finding the Fourth Proportional to 152,805.84, 229,255.70 and 72,945.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,805.84 : 229,255.70 = 72,945.72 : x
2. Step 2: Convert to fraction form
   152,805.84/229,255.70 = 72,945.72/x
3. Step 3: Cross multiply
   152,805.84x = 229,255.70 × 72,945.72
4. Step 4: Simplify right side
   152,805.84x = 16,723,222,100.60
5. Step 5: Solve for x
   x = 16,723,222,100.60/152,805.84
6. Step 6: Final answer
   x = 109,440.99