Finding the Fourth Proportional to 111,396.69, 153,713.61 and 71,134.02

Step by Step Solution

1. Step 1: Write the proportion equation
   111,396.69 : 153,713.61 = 71,134.02 : x
2. Step 2: Convert to fraction form
   111,396.69/153,713.61 = 71,134.02/x
3. Step 3: Cross multiply
   111,396.69x = 153,713.61 × 71,134.02
4. Step 4: Simplify right side
   111,396.69x = 10,934,267,008.01
5. Step 5: Solve for x
   x = 10,934,267,008.01/111,396.69
6. Step 6: Final answer
   x = 98,156.12