Finding the Fourth Proportional to 111,521.91, 153,862.76 and 71,259.24

Step by Step Solution

1. Step 1: Write the proportion equation
   111,521.91 : 153,862.76 = 71,259.24 : x
2. Step 2: Convert to fraction form
   111,521.91/153,862.76 = 71,259.24/x
3. Step 3: Cross multiply
   111,521.91x = 153,862.76 × 71,259.24
4. Step 4: Simplify right side
   111,521.91x = 10,964,142,985.61
5. Step 5: Solve for x
   x = 10,964,142,985.61/111,521.91
6. Step 6: Final answer
   x = 98,313.80