Finding the Fourth Proportional to 69,123.43, 103,684.46 and 31,672.87

Step by Step Solution

1. Step 1: Write the proportion equation
   69,123.43 : 103,684.46 = 31,672.87 : x
2. Step 2: Convert to fraction form
   69,123.43/103,684.46 = 31,672.87/x
3. Step 3: Cross multiply
   69,123.43x = 103,684.46 × 31,672.87
4. Step 4: Simplify right side
   69,123.43x = 3,283,984,588.25
5. Step 5: Solve for x
   x = 3,283,984,588.25/69,123.43
6. Step 6: Final answer
   x = 47,509.00