Finding the Fourth Proportional to 80,667.98, 121,004.76 and 21,503.78

Step by Step Solution

1. Step 1: Write the proportion equation
   80,667.98 : 121,004.76 = 21,503.78 : x
2. Step 2: Convert to fraction form
   80,667.98/121,004.76 = 21,503.78/x
3. Step 3: Cross multiply
   80,667.98x = 121,004.76 × 21,503.78
4. Step 4: Simplify right side
   80,667.98x = 2,602,059,737.99
5. Step 5: Solve for x
   x = 2,602,059,737.99/80,667.98
6. Step 6: Final answer
   x = 32,256.41