Finding the Fourth Proportional to 111,156.30, 153,396.18 and 65,833.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,156.30 : 153,396.18 = 65,833.56 : x
2. Step 2: Convert to fraction form
   111,156.30/153,396.18 = 65,833.56/x
3. Step 3: Cross multiply
   111,156.30x = 153,396.18 × 65,833.56
4. Step 4: Simplify right side
   111,156.30x = 10,098,616,619.80
5. Step 5: Solve for x
   x = 10,098,616,619.80/111,156.30
6. Step 6: Final answer
   x = 90,850.60