Finding the Fourth Proportional to 76,156.10, 105,091.99 and 42,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,156.10 : 105,091.99 = 42,162.20 : x
2. Step 2: Convert to fraction form
   76,156.10/105,091.99 = 42,162.20/x
3. Step 3: Cross multiply
   76,156.10x = 105,091.99 × 42,162.20
4. Step 4: Simplify right side
   76,156.10x = 4,430,909,500.78
5. Step 5: Solve for x
   x = 4,430,909,500.78/76,156.10
6. Step 6: Final answer
   x = 58,181.94