Finding the Fourth Proportional to 81,145.56, 111,867.96 and 69,934.35

Step by Step Solution

1. Step 1: Write the proportion equation
   81,145.56 : 111,867.96 = 69,934.35 : x
2. Step 2: Convert to fraction form
   81,145.56/111,867.96 = 69,934.35/x
3. Step 3: Cross multiply
   81,145.56x = 111,867.96 × 69,934.35
4. Step 4: Simplify right side
   81,145.56x = 7,823,413,068.43
5. Step 5: Solve for x
   x = 7,823,413,068.43/81,145.56
6. Step 6: Final answer
   x = 96,412.09