Finding the Fourth Proportional to 70,404.68, 105,518.32 and 50,309.51

Step by Step Solution

1. Step 1: Write the proportion equation
   70,404.68 : 105,518.32 = 50,309.51 : x
2. Step 2: Convert to fraction form
   70,404.68/105,518.32 = 50,309.51/x
3. Step 3: Cross multiply
   70,404.68x = 105,518.32 × 50,309.51
4. Step 4: Simplify right side
   70,404.68x = 5,308,574,321.86
5. Step 5: Solve for x
   x = 5,308,574,321.86/70,404.68
6. Step 6: Final answer
   x = 75,400.87