Finding the Fourth Proportional to 111,912.87, 154,454.52 and 64,156.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,912.87 : 154,454.52 = 64,156.98 : x
2. Step 2: Convert to fraction form
   111,912.87/154,454.52 = 64,156.98/x
3. Step 3: Cross multiply
   111,912.87x = 154,454.52 × 64,156.98
4. Step 4: Simplify right side
   111,912.87x = 9,909,335,550.55
5. Step 5: Solve for x
   x = 9,909,335,550.55/111,912.87
6. Step 6: Final answer
   x = 88,545.09