Finding the Fourth Proportional to 148,797, 205,339.86 and 81,729

Step by Step Solution

1. Step 1: Write the proportion equation
   148,797 : 205,339.86 = 81,729 : x
2. Step 2: Convert to fraction form
   148,797/205,339.86 = 81,729/x
3. Step 3: Cross multiply
   148,797x = 205,339.86 × 81,729
4. Step 4: Simplify right side
   148,797x = 16,782,221,417.94
5. Step 5: Solve for x
   x = 16,782,221,417.94/148,797
6. Step 6: Final answer
   x = 112,786.02