Finding the Fourth Proportional to 111,406.16, 153,774.92 and 71,662.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,406.16 : 153,774.92 = 71,662.16 : x
2. Step 2: Convert to fraction form
   111,406.16/153,774.92 = 71,662.16/x
3. Step 3: Cross multiply
   111,406.16x = 153,774.92 × 71,662.16
4. Step 4: Simplify right side
   111,406.16x = 11,019,842,921.03
5. Step 5: Solve for x
   x = 11,019,842,921.03/111,406.16
6. Step 6: Final answer
   x = 98,915.92