Finding the Fourth Proportional to 105,162.84, 145,123.62 and 57,416.04

Step by Step Solution

1. Step 1: Write the proportion equation
   105,162.84 : 145,123.62 = 57,416.04 : x
2. Step 2: Convert to fraction form
   105,162.84/145,123.62 = 57,416.04/x
3. Step 3: Cross multiply
   105,162.84x = 145,123.62 × 57,416.04
4. Step 4: Simplify right side
   105,162.84x = 8,332,423,570.86
5. Step 5: Solve for x
   x = 8,332,423,570.86/105,162.84
6. Step 6: Final answer
   x = 79,233.54