Finding the Fourth Proportional to 70,354.24, 105,420.18 and 56,404.82

Step by Step Solution

1. Step 1: Write the proportion equation
   70,354.24 : 105,420.18 = 56,404.82 : x
2. Step 2: Convert to fraction form
   70,354.24/105,420.18 = 56,404.82/x
3. Step 3: Cross multiply
   70,354.24x = 105,420.18 × 56,404.82
4. Step 4: Simplify right side
   70,354.24x = 5,946,206,752.34
5. Step 5: Solve for x
   x = 5,946,206,752.34/70,354.24
6. Step 6: Final answer
   x = 84,518.10