Finding the Fourth Proportional to 145,491.86, 200,748.71 and 85,050.81

Step by Step Solution

1. Step 1: Write the proportion equation
   145,491.86 : 200,748.71 = 85,050.81 : x
2. Step 2: Convert to fraction form
   145,491.86/200,748.71 = 85,050.81/x
3. Step 3: Cross multiply
   145,491.86x = 200,748.71 × 85,050.81
4. Step 4: Simplify right side
   145,491.86x = 17,073,840,604.58
5. Step 5: Solve for x
   x = 17,073,840,604.58/145,491.86
6. Step 6: Final answer
   x = 117,352.55