Finding the Fourth Proportional to 70,768.69, 105,888.06 and 42,201.20

Step by Step Solution

1. Step 1: Write the proportion equation
   70,768.69 : 105,888.06 = 42,201.20 : x
2. Step 2: Convert to fraction form
   70,768.69/105,888.06 = 42,201.20/x
3. Step 3: Cross multiply
   70,768.69x = 105,888.06 × 42,201.20
4. Step 4: Simplify right side
   70,768.69x = 4,468,603,462.39
5. Step 5: Solve for x
   x = 4,468,603,462.39/70,768.69
6. Step 6: Final answer
   x = 63,143.79