Finding the Fourth Proportional to 31,937.19, 43,754.15 and 30,740.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,937.19 : 43,754.15 = 30,740.06 : x
2. Step 2: Convert to fraction form
   31,937.19/43,754.15 = 30,740.06/x
3. Step 3: Cross multiply
   31,937.19x = 43,754.15 × 30,740.06
4. Step 4: Simplify right side
   31,937.19x = 1,345,005,382.48
5. Step 5: Solve for x
   x = 1,345,005,382.48/31,937.19
6. Step 6: Final answer
   x = 42,114.08