Finding the Fourth Proportional to 148,153.50, 204,451.83 and 81,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,153.50 : 204,451.83 = 81,085.50 : x
2. Step 2: Convert to fraction form
   148,153.50/204,451.83 = 81,085.50/x
3. Step 3: Cross multiply
   148,153.50x = 204,451.83 × 81,085.50
4. Step 4: Simplify right side
   148,153.50x = 16,578,078,861.47
5. Step 5: Solve for x
   x = 16,578,078,861.47/148,153.50
6. Step 6: Final answer
   x = 111,897.99