Finding the Fourth Proportional to 148,885, 205,461.30 and 81,817

Step by Step Solution

1. Step 1: Write the proportion equation
   148,885 : 205,461.30 = 81,817 : x
2. Step 2: Convert to fraction form
   148,885/205,461.30 = 81,817/x
3. Step 3: Cross multiply
   148,885x = 205,461.30 × 81,817
4. Step 4: Simplify right side
   148,885x = 16,810,227,182.10
5. Step 5: Solve for x
   x = 16,810,227,182.10/148,885
6. Step 6: Final answer
   x = 112,907.46