Finding the Fourth Proportional to 76,451.59, 105,499.60 and 42,462.28

Step by Step Solution

1. Step 1: Write the proportion equation
   76,451.59 : 105,499.60 = 42,462.28 : x
2. Step 2: Convert to fraction form
   76,451.59/105,499.60 = 42,462.28/x
3. Step 3: Cross multiply
   76,451.59x = 105,499.60 × 42,462.28
4. Step 4: Simplify right side
   76,451.59x = 4,479,753,555.09
5. Step 5: Solve for x
   x = 4,479,753,555.09/76,451.59
6. Step 6: Final answer
   x = 58,595.95