Finding the Fourth Proportional to 149,892.77, 206,851.59 and 81,910.17

Step by Step Solution

1. Step 1: Write the proportion equation
   149,892.77 : 206,851.59 = 81,910.17 : x
2. Step 2: Convert to fraction form
   149,892.77/206,851.59 = 81,910.17/x
3. Step 3: Cross multiply
   149,892.77x = 206,851.59 × 81,910.17
4. Step 4: Simplify right side
   149,892.77x = 16,943,248,901.67
5. Step 5: Solve for x
   x = 16,943,248,901.67/149,892.77
6. Step 6: Final answer
   x = 113,035.80