Finding the Fourth Proportional to 111,419.72, 153,769.72 and 63,663.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,419.72 : 153,769.72 = 63,663.80 : x
2. Step 2: Convert to fraction form
   111,419.72/153,769.72 = 63,663.80/x
3. Step 3: Cross multiply
   111,419.72x = 153,769.72 × 63,663.80
4. Step 4: Simplify right side
   111,419.72x = 9,789,564,925.40
5. Step 5: Solve for x
   x = 9,789,564,925.40/111,419.72
6. Step 6: Final answer
   x = 87,862.05