Finding the Fourth Proportional to 76,952.10, 115,404.15 and 30,219.30

Step by Step Solution

1. Step 1: Write the proportion equation
   76,952.10 : 115,404.15 = 30,219.30 : x
2. Step 2: Convert to fraction form
   76,952.10/115,404.15 = 30,219.30/x
3. Step 3: Cross multiply
   76,952.10x = 115,404.15 × 30,219.30
4. Step 4: Simplify right side
   76,952.10x = 3,487,432,630.10
5. Step 5: Solve for x
   x = 3,487,432,630.10/76,952.10
6. Step 6: Final answer
   x = 45,319.53