Finding the Fourth Proportional to 76,322.38, 105,324.82 and 42,788.38

Step by Step Solution

1. Step 1: Write the proportion equation
   76,322.38 : 105,324.82 = 42,788.38 : x
2. Step 2: Convert to fraction form
   76,322.38/105,324.82 = 42,788.38/x
3. Step 3: Cross multiply
   76,322.38x = 105,324.82 × 42,788.38
4. Step 4: Simplify right side
   76,322.38x = 4,506,678,421.59
5. Step 5: Solve for x
   x = 4,506,678,421.59/76,322.38
6. Step 6: Final answer
   x = 59,047.93