Finding the Fourth Proportional to 76,433.48, 105,472.42 and 42,893

Step by Step Solution

1. Step 1: Write the proportion equation
   76,433.48 : 105,472.42 = 42,893 : x
2. Step 2: Convert to fraction form
   76,433.48/105,472.42 = 42,893/x
3. Step 3: Cross multiply
   76,433.48x = 105,472.42 × 42,893
4. Step 4: Simplify right side
   76,433.48x = 4,524,028,511.06
5. Step 5: Solve for x
   x = 4,524,028,511.06/76,433.48
6. Step 6: Final answer
   x = 59,189.10