Finding the Fourth Proportional to 76,447.19, 105,498.54 and 42,458.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,447.19 : 105,498.54 = 42,458.83 : x
2. Step 2: Convert to fraction form
   76,447.19/105,498.54 = 42,458.83/x
3. Step 3: Cross multiply
   76,447.19x = 105,498.54 × 42,458.83
4. Step 4: Simplify right side
   76,447.19x = 4,479,344,311.36
5. Step 5: Solve for x
   x = 4,479,344,311.36/76,447.19
6. Step 6: Final answer
   x = 58,593.97