Finding the Fourth Proportional to 161,792.70, 242,498.42 and 72,942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   161,792.70 : 242,498.42 = 72,942.18 : x
2. Step 2: Convert to fraction form
   161,792.70/242,498.42 = 72,942.18/x
3. Step 3: Cross multiply
   161,792.70x = 242,498.42 × 72,942.18
4. Step 4: Simplify right side
   161,792.70x = 17,688,363,401.36
5. Step 5: Solve for x
   x = 17,688,363,401.36/161,792.70
6. Step 6: Final answer
   x = 109,327.33