Finding the Fourth Proportional to 76,154.28, 105,091.62 and 42,162.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,154.28 : 105,091.62 = 42,162.12 : x
2. Step 2: Convert to fraction form
   76,154.28/105,091.62 = 42,162.12/x
3. Step 3: Cross multiply
   76,154.28x = 105,091.62 × 42,162.12
4. Step 4: Simplify right side
   76,154.28x = 4,430,885,493.43
5. Step 5: Solve for x
   x = 4,430,885,493.43/76,154.28
6. Step 6: Final answer
   x = 58,183.01