Finding the Fourth Proportional to 81,147.06, 111,870.05 and 69,935.85

Step by Step Solution

1. Step 1: Write the proportion equation
   81,147.06 : 111,870.05 = 69,935.85 : x
2. Step 2: Convert to fraction form
   81,147.06/111,870.05 = 69,935.85/x
3. Step 3: Cross multiply
   81,147.06x = 111,870.05 × 69,935.85
4. Step 4: Simplify right side
   81,147.06x = 7,823,726,686.61
5. Step 5: Solve for x
   x = 7,823,726,686.61/81,147.06
6. Step 6: Final answer
   x = 96,414.17