Finding the Fourth Proportional to 76,424.42, 105,466.12 and 42,432.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,424.42 : 105,466.12 = 42,432.42 : x
2. Step 2: Convert to fraction form
   76,424.42/105,466.12 = 42,432.42/x
3. Step 3: Cross multiply
   76,424.42x = 105,466.12 × 42,432.42
4. Step 4: Simplify right side
   76,424.42x = 4,475,182,699.61
5. Step 5: Solve for x
   x = 4,475,182,699.61/76,424.42
6. Step 6: Final answer
   x = 58,556.97