Finding the Fourth Proportional to 111,146.24, 153,367.49 and 63,396.74

Step by Step Solution

1. Step 1: Write the proportion equation
   111,146.24 : 153,367.49 = 63,396.74 : x
2. Step 2: Convert to fraction form
   111,146.24/153,367.49 = 63,396.74/x
3. Step 3: Cross multiply
   111,146.24x = 153,367.49 × 63,396.74
4. Step 4: Simplify right side
   111,146.24x = 9,722,999,429.89
5. Step 5: Solve for x
   x = 9,722,999,429.89/111,146.24
6. Step 6: Final answer
   x = 87,479.34