Finding the Fourth Proportional to 124,279.50, 171,451.16 and 83,978.58

Step by Step Solution

1. Step 1: Write the proportion equation
   124,279.50 : 171,451.16 = 83,978.58 : x
2. Step 2: Convert to fraction form
   124,279.50/171,451.16 = 83,978.58/x
3. Step 3: Cross multiply
   124,279.50x = 171,451.16 × 83,978.58
4. Step 4: Simplify right side
   124,279.50x = 14,398,224,956.15
5. Step 5: Solve for x
   x = 14,398,224,956.15/124,279.50
6. Step 6: Final answer
   x = 115,853.58