Finding the Fourth Proportional to 31,066.93, 42,878.12 and 29,167.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.93 : 42,878.12 = 29,167.89 : x
2. Step 2: Convert to fraction form
   31,066.93/42,878.12 = 29,167.89/x
3. Step 3: Cross multiply
   31,066.93x = 42,878.12 × 29,167.89
4. Step 4: Simplify right side
   31,066.93x = 1,250,664,287.57
5. Step 5: Solve for x
   x = 1,250,664,287.57/31,066.93
6. Step 6: Final answer
   x = 40,257.09