Finding the Fourth Proportional to 115,440, 159,333.72 and 67,708.73

Step by Step Solution

1. Step 1: Write the proportion equation
   115,440 : 159,333.72 = 67,708.73 : x
2. Step 2: Convert to fraction form
   115,440/159,333.72 = 67,708.73/x
3. Step 3: Cross multiply
   115,440x = 159,333.72 × 67,708.73
4. Step 4: Simplify right side
   115,440x = 10,788,283,030.71
5. Step 5: Solve for x
   x = 10,788,283,030.71/115,440
6. Step 6: Final answer
   x = 93,453.60