Finding the Fourth Proportional to 148,911.88, 205,499.06 and 81,848.20

Step by Step Solution

1. Step 1: Write the proportion equation
   148,911.88 : 205,499.06 = 81,848.20 : x
2. Step 2: Convert to fraction form
   148,911.88/205,499.06 = 81,848.20/x
3. Step 3: Cross multiply
   148,911.88x = 205,499.06 × 81,848.20
4. Step 4: Simplify right side
   148,911.88x = 16,819,728,162.69
5. Step 5: Solve for x
   x = 16,819,728,162.69/148,911.88
6. Step 6: Final answer
   x = 112,950.88