Finding the Fourth Proportional to 70,402.64, 105,519.68 and 49,227.12

Step by Step Solution

1. Step 1: Write the proportion equation
   70,402.64 : 105,519.68 = 49,227.12 : x
2. Step 2: Convert to fraction form
   70,402.64/105,519.68 = 49,227.12/x
3. Step 3: Cross multiply
   70,402.64x = 105,519.68 × 49,227.12
4. Step 4: Simplify right side
   70,402.64x = 5,194,429,949.72
5. Step 5: Solve for x
   x = 5,194,429,949.72/70,402.64
6. Step 6: Final answer
   x = 73,781.75