Finding the Fourth Proportional to 148,851, 205,414.38 and 81,783

Step by Step Solution

1. Step 1: Write the proportion equation
   148,851 : 205,414.38 = 81,783 : x
2. Step 2: Convert to fraction form
   148,851/205,414.38 = 81,783/x
3. Step 3: Cross multiply
   148,851x = 205,414.38 × 81,783
4. Step 4: Simplify right side
   148,851x = 16,799,404,239.54
5. Step 5: Solve for x
   x = 16,799,404,239.54/148,851
6. Step 6: Final answer
   x = 112,860.54