Finding the Fourth Proportional to 40,746.67, 61,123.98 and 12,659.17

Step by Step Solution

1. Step 1: Write the proportion equation
   40,746.67 : 61,123.98 = 12,659.17 : x
2. Step 2: Convert to fraction form
   40,746.67/61,123.98 = 12,659.17/x
3. Step 3: Cross multiply
   40,746.67x = 61,123.98 × 12,659.17
4. Step 4: Simplify right side
   40,746.67x = 773,778,853.90
5. Step 5: Solve for x
   x = 773,778,853.90/40,746.67
6. Step 6: Final answer
   x = 18,989.99