Finding the Fourth Proportional to 76,243.02, 105,215.37 and 42,709.02

Step by Step Solution

1. Step 1: Write the proportion equation
   76,243.02 : 105,215.37 = 42,709.02 : x
2. Step 2: Convert to fraction form
   76,243.02/105,215.37 = 42,709.02/x
3. Step 3: Cross multiply
   76,243.02x = 105,215.37 × 42,709.02
4. Step 4: Simplify right side
   76,243.02x = 4,493,645,341.64
5. Step 5: Solve for x
   x = 4,493,645,341.64/76,243.02
6. Step 6: Final answer
   x = 58,938.45