Finding the Fourth Proportional to 148,900.24, 205,483.17 and 80,917.78

Step by Step Solution

1. Step 1: Write the proportion equation
   148,900.24 : 205,483.17 = 80,917.78 : x
2. Step 2: Convert to fraction form
   148,900.24/205,483.17 = 80,917.78/x
3. Step 3: Cross multiply
   148,900.24x = 205,483.17 × 80,917.78
4. Step 4: Simplify right side
   148,900.24x = 16,627,241,943.76
5. Step 5: Solve for x
   x = 16,627,241,943.76/148,900.24
6. Step 6: Final answer
   x = 111,666.99