Finding the Fourth Proportional to 111,852.45, 154,351.83 and 64,072.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,852.45 : 154,351.83 = 64,072.57 : x
2. Step 2: Convert to fraction form
   111,852.45/154,351.83 = 64,072.57/x
3. Step 3: Cross multiply
   111,852.45x = 154,351.83 × 64,072.57
4. Step 4: Simplify right side
   111,852.45x = 9,889,718,432.30
5. Step 5: Solve for x
   x = 9,889,718,432.30/111,852.45
6. Step 6: Final answer
   x = 88,417.54