Finding the Fourth Proportional to 77,974.98, 116,941.72 and 21,811.61

Step by Step Solution

1. Step 1: Write the proportion equation
   77,974.98 : 116,941.72 = 21,811.61 : x
2. Step 2: Convert to fraction form
   77,974.98/116,941.72 = 21,811.61/x
3. Step 3: Cross multiply
   77,974.98x = 116,941.72 × 21,811.61
4. Step 4: Simplify right side
   77,974.98x = 2,550,687,189.37
5. Step 5: Solve for x
   x = 2,550,687,189.37/77,974.98
6. Step 6: Final answer
   x = 32,711.61