Finding the Fourth Proportional to 51,091.68, 70,508.51 and 30,937.17

Step by Step Solution

1. Step 1: Write the proportion equation
   51,091.68 : 70,508.51 = 30,937.17 : x
2. Step 2: Convert to fraction form
   51,091.68/70,508.51 = 30,937.17/x
3. Step 3: Cross multiply
   51,091.68x = 70,508.51 × 30,937.17
4. Step 4: Simplify right side
   51,091.68x = 2,181,333,760.32
5. Step 5: Solve for x
   x = 2,181,333,760.32/51,091.68
6. Step 6: Final answer
   x = 42,694.50