Finding the Fourth Proportional to 111,389.69, 153,725.90 and 63,642.01

Step by Step Solution

1. Step 1: Write the proportion equation
   111,389.69 : 153,725.90 = 63,642.01 : x
2. Step 2: Convert to fraction form
   111,389.69/153,725.90 = 63,642.01/x
3. Step 3: Cross multiply
   111,389.69x = 153,725.90 × 63,642.01
4. Step 4: Simplify right side
   111,389.69x = 9,783,425,265.06
5. Step 5: Solve for x
   x = 9,783,425,265.06/111,389.69
6. Step 6: Final answer
   x = 87,830.62