Finding the Fourth Proportional to 115,666.31, 173,502.88 and 31,426.02

Step by Step Solution

1. Step 1: Write the proportion equation
   115,666.31 : 173,502.88 = 31,426.02 : x
2. Step 2: Convert to fraction form
   115,666.31/173,502.88 = 31,426.02/x
3. Step 3: Cross multiply
   115,666.31x = 173,502.88 × 31,426.02
4. Step 4: Simplify right side
   115,666.31x = 5,452,504,898.37
5. Step 5: Solve for x
   x = 5,452,504,898.37/115,666.31
6. Step 6: Final answer
   x = 47,139.96