Finding the Fourth Proportional to 53,667.34, 80,426.12 and 45,728.62

Step by Step Solution

1. Step 1: Write the proportion equation
   53,667.34 : 80,426.12 = 45,728.62 : x
2. Step 2: Convert to fraction form
   53,667.34/80,426.12 = 45,728.62/x
3. Step 3: Cross multiply
   53,667.34x = 80,426.12 × 45,728.62
4. Step 4: Simplify right side
   53,667.34x = 3,677,775,479.55
5. Step 5: Solve for x
   x = 3,677,775,479.55/53,667.34
6. Step 6: Final answer
   x = 68,529.12