Finding the Fourth Proportional to 111,004.40, 166,492.74 and 65,438.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,004.40 : 166,492.74 = 65,438.25 : x
2. Step 2: Convert to fraction form
   111,004.40/166,492.74 = 65,438.25/x
3. Step 3: Cross multiply
   111,004.40x = 166,492.74 × 65,438.25
4. Step 4: Simplify right side
   111,004.40x = 10,894,993,543.31
5. Step 5: Solve for x
   x = 10,894,993,543.31/111,004.40
6. Step 6: Final answer
   x = 98,149.21