Finding the Fourth Proportional to 46,142.50, 69,225.31 and 13,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   46,142.50 : 69,225.31 = 13,310.50 : x
2. Step 2: Convert to fraction form
   46,142.50/69,225.31 = 13,310.50/x
3. Step 3: Cross multiply
   46,142.50x = 69,225.31 × 13,310.50
4. Step 4: Simplify right side
   46,142.50x = 921,423,488.76
5. Step 5: Solve for x
   x = 921,423,488.76/46,142.50
6. Step 6: Final answer
   x = 19,969.08