Finding the Fourth Proportional to 76,146.15, 105,080.85 and 42,154.68

Step by Step Solution

1. Step 1: Write the proportion equation
   76,146.15 : 105,080.85 = 42,154.68 : x
2. Step 2: Convert to fraction form
   76,146.15/105,080.85 = 42,154.68/x
3. Step 3: Cross multiply
   76,146.15x = 105,080.85 × 42,154.68
4. Step 4: Simplify right side
   76,146.15x = 4,429,649,605.88
5. Step 5: Solve for x
   x = 4,429,649,605.88/76,146.15
6. Step 6: Final answer
   x = 58,173.00