Finding the Fourth Proportional to 70,851.38, 106,169.94 and 42,740.19

Step by Step Solution

1. Step 1: Write the proportion equation
   70,851.38 : 106,169.94 = 42,740.19 : x
2. Step 2: Convert to fraction form
   70,851.38/106,169.94 = 42,740.19/x
3. Step 3: Cross multiply
   70,851.38x = 106,169.94 × 42,740.19
4. Step 4: Simplify right side
   70,851.38x = 4,537,723,407.89
5. Step 5: Solve for x
   x = 4,537,723,407.89/70,851.38
6. Step 6: Final answer
   x = 64,045.66