Finding the Fourth Proportional to 111,155.22, 153,379.92 and 63,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,155.22 : 153,379.92 = 63,405.72 : x
2. Step 2: Convert to fraction form
   111,155.22/153,379.92 = 63,405.72/x
3. Step 3: Cross multiply
   111,155.22x = 153,379.92 × 63,405.72
4. Step 4: Simplify right side
   111,155.22x = 9,725,164,261.14
5. Step 5: Solve for x
   x = 9,725,164,261.14/111,155.22
6. Step 6: Final answer
   x = 87,491.75