Finding the Fourth Proportional to 70,742.09, 105,935.69 and 42,261.48

Step by Step Solution

1. Step 1: Write the proportion equation
   70,742.09 : 105,935.69 = 42,261.48 : x
2. Step 2: Convert to fraction form
   70,742.09/105,935.69 = 42,261.48/x
3. Step 3: Cross multiply
   70,742.09x = 105,935.69 × 42,261.48
4. Step 4: Simplify right side
   70,742.09x = 4,476,998,738.25
5. Step 5: Solve for x
   x = 4,476,998,738.25/70,742.09
6. Step 6: Final answer
   x = 63,286.21