Finding the Fourth Proportional to 115,322.28, 172,970.55 and 31,090.83

Step by Step Solution

1. Step 1: Write the proportion equation
   115,322.28 : 172,970.55 = 31,090.83 : x
2. Step 2: Convert to fraction form
   115,322.28/172,970.55 = 31,090.83/x
3. Step 3: Cross multiply
   115,322.28x = 172,970.55 × 31,090.83
4. Step 4: Simplify right side
   115,322.28x = 5,377,797,965.06
5. Step 5: Solve for x
   x = 5,377,797,965.06/115,322.28
6. Step 6: Final answer
   x = 46,632.78