Finding the Fourth Proportional to 80,931.46, 111,679.70 and 45,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,931.46 : 111,679.70 = 45,123.42 : x
2. Step 2: Convert to fraction form
   80,931.46/111,679.70 = 45,123.42/x
3. Step 3: Cross multiply
   80,931.46x = 111,679.70 × 45,123.42
4. Step 4: Simplify right side
   80,931.46x = 5,039,370,008.57
5. Step 5: Solve for x
   x = 5,039,370,008.57/80,931.46
6. Step 6: Final answer
   x = 62,267.13