Finding the Fourth Proportional to 111,953.21, 154,498.48 and 63,554.05

Step by Step Solution

1. Step 1: Write the proportion equation
   111,953.21 : 154,498.48 = 63,554.05 : x
2. Step 2: Convert to fraction form
   111,953.21/154,498.48 = 63,554.05/x
3. Step 3: Cross multiply
   111,953.21x = 154,498.48 × 63,554.05
4. Step 4: Simplify right side
   111,953.21x = 9,819,003,942.90
5. Step 5: Solve for x
   x = 9,819,003,942.90/111,953.21
6. Step 6: Final answer
   x = 87,706.32