Finding the Fourth Proportional to 145,498.52, 200,787.18 and 81,834.96

Step by Step Solution

1. Step 1: Write the proportion equation
   145,498.52 : 200,787.18 = 81,834.96 : x
2. Step 2: Convert to fraction form
   145,498.52/200,787.18 = 81,834.96/x
3. Step 3: Cross multiply
   145,498.52x = 200,787.18 × 81,834.96
4. Step 4: Simplify right side
   145,498.52x = 16,431,410,843.81
5. Step 5: Solve for x
   x = 16,431,410,843.81/145,498.52
6. Step 6: Final answer
   x = 112,931.81