Finding the Fourth Proportional to 250,279.84, 375,340.38 and 81,761.86

Step by Step Solution

1. Step 1: Write the proportion equation
   250,279.84 : 375,340.38 = 81,761.86 : x
2. Step 2: Convert to fraction form
   250,279.84/375,340.38 = 81,761.86/x
3. Step 3: Cross multiply
   250,279.84x = 375,340.38 × 81,761.86
4. Step 4: Simplify right side
   250,279.84x = 30,688,527,601.91
5. Step 5: Solve for x
   x = 30,688,527,601.91/250,279.84
6. Step 6: Final answer
   x = 122,616.86