Finding the Fourth Proportional to 70,617.15, 105,827.31 and 53,066.48

Step by Step Solution

1. Step 1: Write the proportion equation
   70,617.15 : 105,827.31 = 53,066.48 : x
2. Step 2: Convert to fraction form
   70,617.15/105,827.31 = 53,066.48/x
3. Step 3: Cross multiply
   70,617.15x = 105,827.31 × 53,066.48
4. Step 4: Simplify right side
   70,617.15x = 5,615,882,300.43
5. Step 5: Solve for x
   x = 5,615,882,300.43/70,617.15
6. Step 6: Final answer
   x = 79,525.76