Finding the Fourth Proportional to 111,391.34, 153,665.71 and 63,632.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,391.34 : 153,665.71 = 63,632.12 : x
2. Step 2: Convert to fraction form
   111,391.34/153,665.71 = 63,632.12/x
3. Step 3: Cross multiply
   111,391.34x = 153,665.71 × 63,632.12
4. Step 4: Simplify right side
   111,391.34x = 9,778,073,971.20
5. Step 5: Solve for x
   x = 9,778,073,971.20/111,391.34
6. Step 6: Final answer
   x = 87,781.28