Finding the Fourth Proportional to 31,105.94, 46,666.19 and 13,580.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.94 : 46,666.19 = 13,580.78 : x
2. Step 2: Convert to fraction form
   31,105.94/46,666.19 = 13,580.78/x
3. Step 3: Cross multiply
   31,105.94x = 46,666.19 × 13,580.78
4. Step 4: Simplify right side
   31,105.94x = 633,763,060.45
5. Step 5: Solve for x
   x = 633,763,060.45/31,105.94
6. Step 6: Final answer
   x = 20,374.35