Finding the Fourth Proportional to 146,258.56, 219,515.82 and 71,434

Step by Step Solution

1. Step 1: Write the proportion equation
   146,258.56 : 219,515.82 = 71,434 : x
2. Step 2: Convert to fraction form
   146,258.56/219,515.82 = 71,434/x
3. Step 3: Cross multiply
   146,258.56x = 219,515.82 × 71,434
4. Step 4: Simplify right side
   146,258.56x = 15,680,893,085.88
5. Step 5: Solve for x
   x = 15,680,893,085.88/146,258.56
6. Step 6: Final answer
   x = 107,213.51