Finding the Fourth Proportional to 111,541.12, 153,917.28 and 63,786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,541.12 : 153,917.28 = 63,786.72 : x
2. Step 2: Convert to fraction form
   111,541.12/153,917.28 = 63,786.72/x
3. Step 3: Cross multiply
   111,541.12x = 153,917.28 × 63,786.72
4. Step 4: Simplify right side
   111,541.12x = 9,817,878,442.52
5. Step 5: Solve for x
   x = 9,817,878,442.52/111,541.12
6. Step 6: Final answer
   x = 88,020.26