Finding the Fourth Proportional to 112,329.72, 155,087.82 and 69,905.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,329.72 : 155,087.82 = 69,905.40 : x
2. Step 2: Convert to fraction form
   112,329.72/155,087.82 = 69,905.40/x
3. Step 3: Cross multiply
   112,329.72x = 155,087.82 × 69,905.40
4. Step 4: Simplify right side
   112,329.72x = 10,841,476,092.23
5. Step 5: Solve for x
   x = 10,841,476,092.23/112,329.72
6. Step 6: Final answer
   x = 96,514.76