Finding the Fourth Proportional to 76,451.31, 105,506.34 and 42,459.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,451.31 : 105,506.34 = 42,459.96 : x
2. Step 2: Convert to fraction form
   76,451.31/105,506.34 = 42,459.96/x
3. Step 3: Cross multiply
   76,451.31x = 105,506.34 × 42,459.96
4. Step 4: Simplify right side
   76,451.31x = 4,479,794,976.15
5. Step 5: Solve for x
   x = 4,479,794,976.15/76,451.31
6. Step 6: Final answer
   x = 58,596.71