Finding the Fourth Proportional to 103,696.52, 143,145.34 and 69,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,696.52 : 143,145.34 = 69,724.72 : x
2. Step 2: Convert to fraction form
   103,696.52/143,145.34 = 69,724.72/x
3. Step 3: Cross multiply
   103,696.52x = 143,145.34 × 69,724.72
4. Step 4: Simplify right side
   103,696.52x = 9,980,768,750.80
5. Step 5: Solve for x
   x = 9,980,768,750.80/103,696.52
6. Step 6: Final answer
   x = 96,249.79