Finding the Fourth Proportional to 69,087.88, 103,506.67 and 31,679.24

Step by Step Solution

1. Step 1: Write the proportion equation
   69,087.88 : 103,506.67 = 31,679.24 : x
2. Step 2: Convert to fraction form
   69,087.88/103,506.67 = 31,679.24/x
3. Step 3: Cross multiply
   69,087.88x = 103,506.67 × 31,679.24
4. Step 4: Simplify right side
   69,087.88x = 3,279,012,820.10
5. Step 5: Solve for x
   x = 3,279,012,820.10/69,087.88
6. Step 6: Final answer
   x = 47,461.48